A natural arch, natural bridge, or (less commonly) rock arch is a natural landform where an

arch An arch is a vertical curved structure that spans an elevated space and may or may not support the weight above it, or in case of a horizontal arch like an arch dam, the hydrostatic pressure against it. Arches may be synonymous with vaul ...

has formed with an opening underneath. Natural arches commonly form where inland

cliff In geography and geology, a cliff is an area of rock which has a general angle defined by the vertical, or nearly vertical. Cliffs are formed by the processes of weathering and erosion, with the effect of gravity. Cliffs are common on co ...

s, coastal cliffs,

fins A fin is a thin component or appendage attached to a larger body or structure. Fins typically function as foils that produce lift or thrust, or provide the ability to steer or stabilize motion while traveling in water, air, or other fluids. Fin ...

or stacks are subject to erosion from the sea, rivers or

weathering Weathering is the deterioration of rocks, soils and minerals as well as wood and artificial materials through contact with water, atmospheric gases, and biological organisms. Weathering occurs ''in situ'' (on site, with little or no movement), ...

( subaerial processes). Most natural arches are formed from narrow fins and sea stacks composed of

sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates) ...

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

with steep, often vertical, cliff faces. The formations become narrower due to

erosion Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location where it is deposited. Erosion is distin ...

over

geologic time scale The geologic time scale, or geological time scale, (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochrono ...

s. The softer rock

stratum In geology and related fields, a stratum ( : strata) is a layer of rock or sediment characterized by certain lithologic properties or attributes that distinguish it from adjacent layers from which it is separated by visible surfaces known as ei ...

erodes away creating rock shelters, or alcoves, on opposite sides of the formation beneath the relatively harder stratum, or

caprock Caprock or cap rock is a more resistant rock type overlying a less resistant rock type,Kearey, Philip (2001). ''Dictionary of Geology'', 2nd ed., Penguin Reference, London, New York, etc., p. 41.. . analogous to an upper crust on a cake that is ha ...

, above it. The alcoves erode further into the formation eventually meeting underneath the harder caprock layer, thus creating an arch. The erosional processes exploit weaknesses in the softer rock layers making cracks larger and removing material more quickly than the caprock; however, the caprock itself continues to erode after an arch has formed, which will ultimately lead to collapse. The choice between ''bridge'' and ''arch'' is somewhat arbitrary. The Natural Arch and Bridge Society identifies a bridge as a subtype of arch that is primarily water-formed. By contrast, the ''Dictionary of Geological Terms'' defines a natural bridge as a "natural arch that spans a valley of erosion." The largest natural arch, by a significant margin, is the

Xianren Bridge Xianren Bridge () is a natural arch created by flowing water that has the world's longest recorded span. Carved of limestone karst, the formation bridges Buliu River in the northern Guangxi Zhuang Autonomous Region, China. Because of its remo ...

in China, with a span of .

Coastline

On coasts two different types of arches can form depending on the geology. On

discordant coastline A discordant coastline occurs where bands of different rock types run perpendicular to the coast. The differing resistance to erosion leads to the formation of headlands and bays. A hard rock type such as granite is resistant to erosion and cre ...

s rock types run at 90° to the coast. Wave refraction concentrates the wave energy on the headland, and an arch forms when

cave A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea ...

s break through the headland. Two examples of this type of arch are

London Arch London Arch (formerly London Bridge) is an offshore natural arch in the Port Campbell National Park, Australia. The arch is a significant tourist attraction along the Great Ocean Road near Port Campbell in Victoria. This stack was formed by a ...

previously known as London Bridgein

Victoria Victoria most commonly refers to: * Victoria (Australia), a state of the Commonwealth of Australia * Victoria, British Columbia, provincial capital of British Columbia, Canada * Victoria (mythology), Roman goddess of Victory * Victoria, Seychelle ...

, Australia, and

Neill Island Neil Island, officially known as Shaheed Dweep, is an island of the Andaman Islands, located in Ritchie's Archipelago. It belongs to the South Andaman administrative district, part of the Indian union territory of Andaman and Nicobar Islands. ...

in the

Andaman Islands The Andaman Islands () are an archipelago in the northeastern Indian Ocean about southwest off the coasts of Myanmar's Ayeyarwady Region. Together with the Nicobar Islands to their south, the Andamans serve as a maritime boundary between th ...

, India. When these arches eventually collapse, they form stacks and stumps. On

concordant coastline In coastal geography, a concordant, longitudinal, or Pacific type coastline occurs where beds, or layers, of differing rock types are folded into ridges that run parallel to the coast. The outer hard rock (for example, granite) provides a prote ...

s rock types run parallel to the coastline, with weak rock such as

shale Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especial ...

protected by stronger rock such as

. The wave action along concordant coastlines breaks through the strong rock and then erodes the weak rock very quickly. Good examples of this type of arch are the

Durdle Door Durdle Door (sometimes written Durdle Dor) is a natural limestone arch on the Jurassic Coast near Lulworth in Dorset, England.West, I.W., 2003.Durdle Door; Geology of the Dorset Coast. Southampton University, UK. Version H.07.09.03. It is priva ...

and

Stair Hole Stair Hole is a small cove located just west of Lulworth Cove in Dorset, southern England. The folded limestone strata known as the ''Lulworth crumple'' are particularly visible at Stair Hole. There are several caves visible from the seaward s ...

near

Lulworth Cove Lulworth Cove is a cove near the village of West Lulworth, on the Jurassic Coast in Dorset, southern England. The cove is one of the world's finest examples of such a landform, and is a World Heritage Site and tourist location with approximately ...

Dorset Dorset ( ; archaically: Dorsetshire , ) is a county in South West England on the English Channel coast. The ceremonial county comprises the unitary authority areas of Bournemouth, Christchurch and Poole and Dorset (unitary authority), Dors ...

Jurassic Coast The Jurassic Coast is a World Heritage Site on the English Channel coast of southern England. It stretches from Exmouth in East Devon to Studland Bay in Dorset, a distance of about , and was inscribed on the World Heritage List in mid-Decembe ...

in south England. When Stair Hole eventually collapses it will form a

cove A cove is a small type of bay or coastal inlet. Coves usually have narrow, restricted entrances, are often circular or oval, and are often situated within a larger bay. Small, narrow, sheltered bays, inlets, creeks, or recesses in a coast are o ...

Weather-eroded arches

Metate Arch, Devils Garden, Grand Staircase-Escalante National Monument, Utah, USA

Weather-eroded arches begin their formation as deep cracks which penetrate into a sandstone layer. Erosion occurring within the cracks wears away exposed rock layers and enlarges the surface cracks isolating narrow sandstone walls which are called fins. Alternating frosts and thawing cause crumbling and flaking of the porous sandstone and eventually cut through some of the fins. The resulting holes become enlarged to arch proportions by rockfalls and weathering. The arches eventually collapse leaving only buttresses that in time will erode. Many weather-eroded arches are found in

Arches National Park Arches National Park is a national park in eastern Utah, United States. The park is adjacent to the Colorado River, north of Moab, Utah. More than 2,000 natural sandstone arches are located in the park, including the well-known Delicate Arch, ...

, Canyonlands National Park, and

Grand Staircase–Escalante National Monument The Grand Staircase–Escalante National Monument (GSENM) is a United States national monument protecting the Grand Staircase, the Kaiparowits Plateau, and the Canyons of the Escalante ( Escalante River) in southern Utah. It was established in ...

(GSENM), all located in southern Utah, United States.

Water-eroded arches

Some natural bridges may look like arches, but they form in the path of streams that wear away and penetrate the rock. Pothole arches form by chemical weathering as water collects in natural depressions and eventually cuts through to the layer below.

Natural Bridges National Monument Natural Bridges National Monument is a U.S. National Monument located about northwest of the Four Corners boundary of southeast Utah, in the western United States, at the junction of White Canyon and Armstrong Canyon, part of the Colorad ...

in Utah protects the area surrounding three large natural bridges, all of which were formed by streams running through canyons, the largest of which is named

Sipapu Bridge Sipapu Bridge is a natural bridge or arch located in the Natural Bridges National Monument in central San Juan County, Utah, United States. The bridge spans White Canyon. Description Sipapu was long reported to have a span of by the Nation ...

with a span of . The

Rainbow Bridge National Monument Rainbow Bridge National Monument is administered by Glen Canyon National Recreation Area, southern Utah, United States. Rainbow Bridge is often described as the world's highest natural bridge. The span of Rainbow Bridge was reported in 1974 ...

's namesake was also formed by flowing water which created the largest known natural bridge in the

Western Hemisphere The Western Hemisphere is the half of the planet Earth that lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian. The other half is called the Eastern Hemisphere. Politically, the te ...

with a span of , based on a laser measurement made in 2007.

, also known as Fairy Bridge, in

Guangxi Guangxi (; ; Chinese postal romanization, alternately romanized as Kwanghsi; ; za, Gvangjsih, italics=yes), officially the Guangxi Zhuang Autonomous Region (GZAR), is an Autonomous regions of China, autonomous region of the People's Republic ...

, China is currently the world's largest known natural bridge with a span recorded at by the ''Natural Arch and Bridge Society'' in October 2010, with a precision of ±.

Cave erosion

Natural bridges can form from natural

s, where paired

sinkhole A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are locally also known as ''vrtače'' and shakeholes, and to openi ...

s collapse and a ridge of stone is left standing in between, with the cave passageway connecting from sinkhole to sinkhole. Like all rock formations, natural bridges are subject to continued erosion, and will eventually collapse and disappear. One example of this was the double-arched

n coastal rock formation,

London Bridge Several bridges named London Bridge have spanned the River Thames between the City of London and Southwark, in central London. The current crossing, which opened to traffic in 1973, is a box girder bridge built from concrete and steel. It r ...

, which lost an arch after storms increased erosion.

Moon Hill Moon Hill () is a hill with a natural arch through it a few kilometers outside Yangshuo in southern China's Guangxi autonomous region. Moon Hill is part of the Guilin Mountains. It is so named for a wide, semicircular hole through the hill, ...

Yangshuo Yangshuo County () is a county under the jurisdiction of Guilin City, in the northeast of Guangxi, China. Its seat is located in Yangshuo Town. Surrounded by karst peaks and bordered on one side by the Li River it is easily accessible by bus or by ...

Guizhou Province Guizhou (; formerly Kweichow) is a landlocked province in the southwest region of the People's Republic of China. Its capital and largest city is Guiyang, in the center of the province. Guizhou borders the autonomous region of Guangxi to ...

, China, is an example of an arch formed by the remnant of a

karst Karst is a topography formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves. It has also been documented for more weathering-resistant ro ...

limestone cave.

Arches as highway or railway bridges

In a few places in the world, natural arches are utilized by humans as transportation bridges with highways or railroads running across them. In Virginia, US Route 11 traverses

Natural Bridge A natural arch, natural bridge, or (less commonly) rock arch is a natural landform where an arch has formed with an opening underneath. Natural arches commonly form where inland cliffs, coastal cliffs, fins or stacks are subject to erosion ...

. Two additional natural arch roadways are found in

Kentucky Kentucky ( , ), officially the Commonwealth of Kentucky, is a state in the Southeastern region of the United States and one of the states of the Upper South. It borders Illinois, Indiana, and Ohio to the north; West Virginia and Virginia to ...

. The first, a cave erosion arch made of limestone, is in

Carter Caves State Resort Park Carter Caves State Resort Park is located in Carter County, Kentucky, United States, along Tygarts Creek. It is formed by Carter Caves, and nearby Cascade Caves, which were added to the park in 1959. On December 16, 1981, of the park were desi ...

and has a paved road on top. The second, a weather-eroded sandstone arch with a dirt road on top, is on the edge of Natural Bridge State Park in Kentucky. The latter arch is called White's Branch Arch (also known as the Narrows) and the road going over it is usually referred to as the Narrows Road. In Europe, the

Romania Romania ( ; ro, România ) is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern, and Southeast Europe, Southeastern Europe. It borders Bulgaria to the south, Ukraine to the north, Hungary to the west, S ...

n village of Ponoarele has a road segment called God's Bridge that is long and wide, passing over a stone arch high and thick. The railroad from

Lima Lima ( ; ), originally founded as Ciudad de Los Reyes (City of The Kings) is the capital and the largest city of Peru. It is located in the valleys of the Chillón River, Chillón, Rímac River, Rímac and Lurín Rivers, in the desert zone of t ...

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...

crosses the Rio Yauli on a natural bridge near kilometer 214.2 as it approaches the city of

La Oroya La Oroya is a city on the River Mantaro in central Peru. It is situated on the Andes some 176 km east-north-east of the national capital, Lima, and is capital of the Yauli Province. La Oroya is the location of a smelting operation that ea ...

Notable natural arches

Africa

Aloba Arch Aloba Arch is the name of a natural arch located in Chad. Large natural arches are somewhat rare outside the southern and western regions of China and the Colorado Plateau of the southwest United States. Chad's Ennedi Plateau, located within th ...

Chad Chad (; ar, تشاد , ; french: Tchad, ), officially the Republic of Chad, '; ) is a landlocked country at the crossroads of North and Central Africa. It is bordered by Libya to the north, Sudan to the east, the Central African Republic ...

Boatswain Bird Island Boatswain Bird Island, also spelt Boatswainbird Island, is a small island some off the east coast of Ascension Island in the South Atlantic Ocean with an area of approximately . It is administered from Georgetown on Ascension, which is part of ...

, Ascension Island *

Bogenfels Bogenfels is a location in the coastal Namib Desert of Namibia, noted for its natural rock formations (hence the name, which means "arch rock" in German). The main formation is a high rock arch close to the coast. It is not easily accessible, d ...

Namibia Namibia (, ), officially the Republic of Namibia, is a country in Southern Africa. Its western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and ea ...

Goedehoop natural rock bridge The Goedehoop natural rock bridge is a provincial heritage site in Ermelo in the Mpumalanga province of South Africa. In 1982 it was described in the Government Gazette A government gazette (also known as an official gazette, offic ...

South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ...

* Hole-in-the-Wall,

Eastern Cape The Eastern Cape is one of the provinces of South Africa. Its capital is Bhisho, but its two largest cities are East London and Gqeberha. The second largest province in the country (at 168,966 km2) after Northern Cape, it was formed in ...

, South Africa *

Tassili n'Ajjer Tassili n'Ajjer ( Berber: ''Tassili n Ajjer'', ar, طاسيلي ناجر; "Plateau of rivers") is a national park in the Sahara desert, located on a vast plateau in southeastern Algeria. Having one of the most important groupings of prehistoric ...

and

Tadrart Rouge The Tadrart Rouge (meaning "Red Mountain") or Southern Tadrart or Algerian Tadrart or Meridional Tadrart is a mountain range in southeastern Algeria, part of the Algerian Desert. The area has a rich array of rock art. Geography The ''Tadrart Ro ...

, two mountain ranges with many arches,

Algeria ) , image_map = Algeria (centered orthographic projection).svg , map_caption = , image_map2 = , capital = Algiers , coordinates = , largest_city = capital , relig ...

Tukuyu Tukuyu, known as Neu Langenburg during the German colonial rule, is a small hillside town that lies about south of the city of Mbeya, at an elevation of around in the highland Rungwe District of southern Tanzania, East Africa. Tukuyu town has ...

natural bridge,

Tanzania Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands and ...

* Wolfberg Arch, Cederberg,

Western Cape The Western Cape is a province of South Africa, situated on the south-western coast of the country. It is the fourth largest of the nine provinces with an area of , and the third most populous, with an estimated 7 million inhabitants in 2020 ...

, South Africa

Antarctica

* The Kerguelen Arch, Christmas Harbour, the Kerguelen Islands (collapsed ca. 1910) *

Scott Island Scott Island is a small uninhabited island of volcanic origin in the Ross Sea, Southern Ocean, northeast of Cape Adare, the northeastern extremity of Victoria Land, Antarctica. It is long north–south, and between and wide, reaching a h ...

in the

Antarctic The Antarctic ( or , American English also or ; commonly ) is a polar region around Earth's South Pole, opposite the Arctic region around the North Pole. The Antarctic comprises the continent of Antarctica, the Kerguelen Plateau and other ...

has a natural arch

Asia

* Arch Cave, Galilee,

Israel Israel (; he, יִשְׂרָאֵל, ; ar, إِسْرَائِيل, ), officially the State of Israel ( he, מְדִינַת יִשְׂרָאֵל, label=none, translit=Medīnat Yīsrāʾēl; ), is a country in Western Asia. It is situated ...

* Burdah Bridge,

Wadi Rum Wadi Rum ( ar, وادي رم ''Wādī Ramm'', also ''Wādī al-Ramm''), known also as the Valley of the Moon ( ar, وادي القمر ''Wādī al-Qamar''), is a valley cut into the sandstone and granite rock in southern Jordan, about to the east ...

Jordan Jordan ( ar, الأردن; tr. ' ), officially the Hashemite Kingdom of Jordan,; tr. ' is a country in Western Asia. It is situated at the crossroads of Asia, Africa, and Europe, within the Levant region, on the East Bank of the Jordan Rive ...

Baatara gorge waterfall The Baatara gorge sinkhole (Baatara gorge waterfall) is a waterfall in the Chatine, Lebanon near Balaa. The waterfall drops into the Balaa Pothole, a cave of Jurassic limestone located on the Lebanon Mountain Trail. The cave is also known as ...

Tannourine Tannourine ( ar, تنورين, also Tannoureen, Tannorine) is a Lebanese town located in the Batroun District, part of the Governorate of North Lebanon, 80 km from the capital Beirut. Tannourine is formed by a cluster of mountain settlements ...

Lebanon Lebanon ( , ar, لُبْنَان, translit=lubnān, ), officially the Republic of Lebanon () or the Lebanese Republic, is a country in Western Asia. It is located between Syria to the north and east and Israel to the south, while Cyprus li ...

has three natural bridges. * Engetsu Island,

Shirahama, Wakayama is a town in Nishimuro District, Wakayama Prefecture, Japan. , the town had an estimated population of 20,704 in 11024 households and a population density of 100 persons per km². The total area of the town is . Geography Shirahama is located ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

* Hawrah Natural Bridge,

, India * Hazarchishma Natural Bridge,

Bamyan Province Bamyan Province ( prs, ولایت بامیان) also spelled Bamiyan, Bāmīān or Bāmyān is one of the thirty-four provinces of Afghanistan, located in the central highlands of the Afghanistan. The terrain in Bamyan is mountainous or semi-m ...

Afghanistan Afghanistan, officially the Islamic Emirate of Afghanistan,; prs, امارت اسلامی افغانستان is a landlocked country located at the crossroads of Central Asia and South Asia. Referred to as the Heart of Asia, it is bordere ...

Jabal Umm Fruth Bridge Wadi Rum ( ar, وادي رم ''Wādī Ramm'', also ''Wādī al-Ramm''), known also as the Valley of the Moon ( ar, وادي القمر ''Wādī al-Qamar''), is a valley cut into the sandstone and granite rock in southern Jordan, about to the east ...

, Jordan * Jebel Kharaz,

, Jordan * "Jisr al-Hajar" or the "Stone Bridge" in

Mzaar Kfardebian Mzaar Kfardebian ( ar, مزار كفردبيان — formerly ''Faraya Mzaar'') is a ski area in Lebanon and the largest ski resort in the Middle East. It is located one hour away from Beirut, the capital of Lebanon. It is also referred to as Ou ...

, Lebanon *

Elephant Trunk Hill The Elephant Trunk Hill () is a hill, landmark and tourist attraction in Guilin, Guangxi, China. It is not only one of the major tourist attractions of Guilin, an international tourist city, but also the symbol of Guilin, which uses elephant ...

Guilin Guilin (Standard Zhuang: ''Gveilinz''; alternatively romanized as Kweilin) is a prefecture-level city in the northeast of China's Guangxi Zhuang Autonomous Region. It is situated on the west bank of the Li River and borders Hunan to the nort ...

province,

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

province, China * Natural Arch, Tirumala hills,

Tirumala Tirumala is a spiritual town in Tirupati district of the Indian state of Andhra Pradesh. It is one of the suburbs of the Tirupati, Tirupati urban agglomeration. The town is a part of Tirupati Urban Development Authority and located in Tirupa ...

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

* The Pigeons' Rock known as

Raouché Raouché () is a residential and commercial neighborhood in Beirut, Lebanon. It is known for its upscale apartment buildings, numerous restaurants, and cliff-side cafés that line Avenue de Paris, which forms part of the Corniche Beirut. The ...

Beirut Beirut, french: Beyrouth is the capital and largest city of Lebanon. , Greater Beirut has a population of 2.5 million, which makes it the third-largest city in the Levant region. The city is situated on a peninsula at the midpoint o ...

, Lebanon * Punarjani Guha, natural tunnel in Thrissur district of Kerala, India * Rock Bridge of Gulanchwadi,

Narayangaon Narayangaon is a town in the Junnar taluka of the Pune district of Maharashtra state, India. Water is abundant because of its proximity to the major dams, the western ghats, and the Sahyadri mountain range. Geography Narayangaon is located 656 ...

Maharashtra Maharashtra (; , abbr. MH or Maha) is a states and union territories of India, state in the western India, western peninsular region of India occupying a substantial portion of the Deccan Plateau. Maharashtra is the List of states and union te ...

, India *

Shipton's Arch Shipton's Arch ( ug, تۆشۈك تاغ, translit=Töshük tagh, yengi=Tɵxük taƣ, ucy=Төшүк тағ, literally "Hole Mountain"; or simply ) is a conglomerate natural arch in China's Xinjiang Uyghur Autonomous Region. It is located in Kizi ...

Xinjiang Xinjiang, SASM/GNC: ''Xinjang''; zh, c=, p=Xīnjiāng; formerly romanized as Sinkiang (, ), officially the Xinjiang Uygur Autonomous Region (XUAR), is an autonomous region of the People's Republic of China (PRC), located in the northwest ...

, China * Steller's Arch on

Bering Island Bering Island (russian: о́стров Бе́ринга, ''ostrov Beringa'') is located off the Kamchatka Peninsula in the Bering Sea. Description At long by wide, it is the largest and westernmost of the Commander Islands, with an area of . ...

, Russia *

Tianmen Mountain Tianmen Mountain () is a mountain located within Tianmen Mountain National Park, Zhangjiajie, in the northwestern part of Hunan Province, China. Mountain A cablecar was constructed in 2005 by the French company Poma from nearby Zhangjiajie rail ...

Zhangjiajie Zhangjiajie (), also known in Tujia language as ''Zhangx jif avlar'' /dzaŋ˩ ji˥ a˩.la˥/, is a prefecture-level city in the northwestern part of Hunan Province, China. It comprises the district of Yongding, Wulingyuan and counties of Cili ...

, China *

, China * The Great White Hole of Krabi,

Krabi Krabi ( th, กระบี่, ) is the main town in the province of Krabi (''thesaban mueang'') on the west coast of southern Thailand at the mouth of the Krabi River where it empties in Phang Nga Bay. As of 2020, the town had a population of ...

Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is bo ...

* Mountain Angel Eye,

Cao Bằng Cao Bằng () is a city in northern Vietnam. It is the capital and largest settlement of Cao Bằng Province. It is located on the bank of the Bằng Giang river, and is around away from the border with China's Guangxi region. According to the ...

Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making i ...

Europe

* Albandeira Arch,

Lagoa, Algarve Lagoa () is a city and municipality in the district of Faro, in the Portuguese region of Algarve. The population of the municipality in 2011 was 22,975, in an area of 88.25 km². Its urban population, in the city of Lagoa proper, is 6,100 in ...

Portugal Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of ...

* Arco Naturale, Capri,

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...

* As Catedrais beach,

Ribadeo Ribadeo is a municipality in the Spanish province of Lugo in Galicia. It has a population of 10,023 ( INE, 2011) and an area of . It is the capital of the A Mariña Oriental comarca. Geography The municipality of Ribadeo has approximately the ...

Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , i ...

Azure Window The Azure Window ( mt, it-Tieqa Żerqa, italic=no), also known as the Dwejra Window ( mt, it-Tieqa tad-Dwejra, italic=no), was a natural arch on the island of Gozo, located just off the shores of Malta. The limestone feature, which was in Dw ...

, Gozo,

Malta Malta ( , , ), officially the Republic of Malta ( mt, Repubblika ta' Malta ), is an island country in the Mediterranean Sea. It consists of an archipelago, between Italy and Libya, and is often considered a part of Southern Europe. It lies ...

(collapsed in 2017) * Blue Window or the Seal cave of the Corinthian Gulf, in the front of the

Alcyonides The Alcyonides (, ''Alkyonides'') were, in Greek mythology, the seven daughters of the giant Alcyoneus. Names These sisters were identified individually as, Alkippe, Anthe, Asteria, Drimo, Methone, Pallene and Phthonia ( Phosthonia or Cht ...

islands,

Greece Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders with ...

Bow Fiddle Rock Bow Fiddle Rock is a natural sea arch near Portknockie on the north-eastern coast of Scotland. It is so called because it resembles the tip of a fiddle bow. It is composed of Quartzite, a metamorphic rock which was originally quartz sandsto ...

Portknockie Portknockie ( gd, Port Chnocaidh, the hilly port) is a coastal village on the Moray Firth within Moray, Scotland. The village's name is written as Portknockies in the Old Parish Registers. This would suggest that the port's name referred to not ...

Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the ...

Chaos de Montpellier-le-Vieux The Chaos de Montpellier-le-Vieux is a blockfield at the southern edge of the Causse Noir, above the Gorges de la Dourbie, north-east of Millau and its famous viaduct, in the commune of La Roque-Sainte-Marguerite, Aveyron, France. The rock ...

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...

Drangarnir Drangarnir is the collective name for two sea stacks between the islet Tindhólmur and the island Vágar in the Faroe Islands The Faroe Islands ( ), or simply the Faroes ( fo, Føroyar ; da, Færøerne ), are a North Atlantic island gr ...

, Faroe Islands *

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

Dyrhólaey Dyrhólaey (, "door hill island"), formerly known by seamen as Cape Portland, is a small promontory located on the south coast of Iceland, not far from the village Vík. It was formerly an island of volcanic origin, which is also known by the ...

Iceland Iceland ( is, Ísland; ) is a Nordic island country in the North Atlantic Ocean and in the Arctic Ocean. Iceland is the most sparsely populated country in Europe. Iceland's capital and largest city is Reykjavík, which (along with its s ...

* Els Arcs,

Castell de Castells Castell de Castells (, ) is a municipality high in the mountains of the Marina Alta on the Costa Blanca in southeastern Spain. The village is at the source of the Rio Jalón and surrounded by mountains. It is approximately from the nearest vil ...

, Spain * Es Pontàs, Spain *

Étretat Étretat () is a Communes of France, commune in the Seine-Maritime Departments of France, department in the Normandy (administrative region), Normandy Regions of France, region of Northwestern France. It is a Tourism, tourist and Agriculture, far ...

, France * Geropotamos bridge,

Crete Crete ( el, Κρήτη, translit=, Modern: , Ancient: ) is the largest and most populous of the Greek islands, the 88th largest island in the world and the fifth largest island in the Mediterranean Sea, after Sicily, Sardinia, Cyprus, and ...

* Għar Qawqla, Gozo,

(collapsed in the 20th century) *

Green Bridge of Wales The Green Bridge of Wales ( cy, Pont Werdd Cymru) is a natural arch formed from Carboniferous Limestone within the Pembrokeshire Coast National Park, Pembrokeshire, Wales. It is located in the Castlemartin Training Area, Castlemartin military tra ...

Pembrokeshire Pembrokeshire ( ; cy, Sir Benfro ) is a Local government in Wales#Principal areas, county in the South West Wales, south-west of Wales. It is bordered by Carmarthenshire to the east, Ceredigion to the northeast, and the rest by sea. The count ...

Wales Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...

* Hajdučka vrata,

Čvrsnica Čvrsnica ( sr-cyrl, Чврсница, ) is a mountain in the Dinarides of Bosnia and Herzegovina, located in northern Herzegovina. Most of the mountain is located in the Herzegovina-Neretva Canton municipalities of Mostar and Jablanica, while t ...

mountain,

Bosnia and Herzegovina Bosnia and Herzegovina ( sh, / , ), abbreviated BiH () or B&H, sometimes called Bosnia–Herzegovina and often known informally as Bosnia, is a country at the crossroads of south and southeast Europe, located in the Balkans. Bosnia and H ...

Inland Sea, Gozo The Inland Sea, sometimes called Qawra in Maltese and also known as Dwejra, is a lagoon of seawater on the island of Gozo linked to the Mediterranean Sea through an opening formed by a narrow natural arch. It was probably formed where a geologi ...

, Malta * Kuhstall,

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...

* Lalaria beach arch,

Skiathos Skiathos ( el, Σκιάθος, , ; grc, Σκίαθος, ; and ) is a small Greek island in the northwest Aegean Sea. Skiathos is the westernmost island in the Northern Sporades group, east of the Pelion peninsula in Magnesia on the mainland ...

Island,

Malá Pravčická brána The Malá Pravčická Brána (german: Kleines Prebischtor) is a natural sandstone arch, that is about high and wide. It is located in Bohemian Switzerland near the ''red'' signposted main hiking route (E3 European long distance path) between Mez ...

Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...

* Marinha Beach, Caramujeira,

* Marsden Rock,

South Shields South Shields () is a coastal town in South Tyneside, Tyne and Wear, England. It is on the south bank of the mouth of the River Tyne. Historically, it was known in Roman times as Arbeia, and as Caer Urfa by Early Middle Ages. According to the 20 ...

(collapsed in 1996) *

Marvelous Bridges The Marvelous Bridges or Wonderful Bridges ( bg, Чудни �емостове, ''Chudni emostove'') are natural arches in the Rhodope Mountains of southern Bulgaria. They are located in the karst valley of the Erkyupriya River in the Western Rho ...

Bulgaria Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the eastern flank of the Balkans, and is bordered by Romania to the north, Serbia and North Macedon ...

Monte Forato Monte Forato is a mountain (1,230 m) in the Alpi Apuane, in Tuscany, central Italy. It is formed by two peaks of similar altitude, connected by a natural arch which has given the group its name (meaning "Holed Mountain" in Italian). The h ...

Tuscany Tuscany ( ; it, Toscana ) is a Regions of Italy, region in central Italy with an area of about and a population of about 3.8 million inhabitants. The regional capital is Florence (''Firenze''). Tuscany is known for its landscapes, history, art ...

Ófærufoss Ófærufoss () is a waterfall situated in the Eldgjá chasm in the western part of Vatnajökull National Park, Iceland. Until the early 1990s a natural bridge A natural arch, natural bridge, or (less commonly) rock arch is a natural landfor ...

, Iceland (collapsed in winter 1992/1993) *

Pistyll Rhaeadr Pistyll Rhaeadr (, meaning "spring of the waterfall") is a waterfall from the village of Llanrhaeadr-ym-Mochnant in Powys, Wales, and west of Oswestry. Description Pistyll Rhaeadr is formed by the Afon Disgynfa falling, in three stages, ov ...

, Wales * Ponoarele,

(Podul lui Dumnezeu, or God's Bridge) *

Pont d'Arc The Pont d'Arc (French ''pont'' = bridge) is a large natural bridge, located in the Ardèche ''département'' in the south of France, 5 km from the town of Vallon-Pont-d'Arc. The arch, formed when the river Ardèche broke through a narrow e ...

, France *

Pravčická brána The Pravčická brána (in English also ''Pravčice Gate'', ''Pravčická Gate'' or ''Pravcicka Gate''; german: Prebischtor) is a narrow rock formation in Bohemian Switzerland in the Czech Republic, approx. 3 km northeast of Hřensko. With a ...

, Czech Republic * Trypitòs Arch of

Paxi Paxos ( gr, Παξός) is a Greek island in the Ionian Sea, lying just south of Corfu. As a group with the nearby island of Antipaxos and adjoining islets, it is also called by the plural form Paxi or Paxoi ( gr, Παξοί, pronounced in Engl ...

Island,

Wied il-Mielaħ Window The Wied il-Mielaħ Window ( mt, it-Tieqa ta' Wied il-Mielaħ) is a limestone natural arch on the north-western coast of the island of Gozo in Malta. It is located at the end of the valley Wied il-Mielaħ north of the village of Għarb. This natur ...

, Gozo, Malta

North America

Canada

Percé Rock Percé Rock () is a huge sheer rock formation in the Gulf of Saint Lawrence on the tip of the Gaspé Peninsula in Québec, Canada, off Percé Bay. Percé Rock appears from a distance like a ship under sail. It is one of the world's largest natu ...

Quebec Quebec ( ; )According to the Canadian government, ''Québec'' (with the acute accent) is the official name in Canadian French and ''Quebec'' (without the accent) is the province's official name in Canadian English is one of the thirtee ...

Caribbean

Aruba Aruba ( , , ), officially the Country of Aruba ( nl, Land Aruba; pap, Pais Aruba) is a constituent country of the Kingdom of the Netherlands physically located in the mid-south of the Caribbean Sea, about north of the Venezuela peninsula of ...

(collapsed 2005)

Mexico

El Arco de Cabo San Lucas The arch of Cabo San Lucas is a distinctive granitic rock formation at the southern tip of Cabo San Lucas, which is itself the extreme southern end of Mexico's Baja California Peninsula. The arch is locally known as "El Arco," which means "th ...

Baja California Sur Baja California Sur (; 'South Lower California'), officially the Free and Sovereign State of Baja California Sur ( es, Estado Libre y Soberano de Baja California Sur), is the least populated state and the 31st admitted state of the 32 federal ent ...

United States

Anacapa Island Anacapa Island (Chumash: ''Anyapax'', meaning "mirage, illusion") is a small volcanic island located about off the coast of Port Hueneme, California, in Ventura County. The island is composed of a series of narrow islets long, oriented ...

Channel Islands National Park Channel Islands National Park consists of five of the eight Channel Islands off the Pacific coast of the U.S. state of California. Although the islands are close to the shore of the densely populated state, they have been relatively undevelope ...

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

* Angel Arch,

Utah Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to it ...

* Arch Creek,

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

* Arch Rock,

Michigan Michigan () is a state in the Great Lakes region of the upper Midwestern United States. With a population of nearly 10.12 million and an area of nearly , Michigan is the 10th-largest state by population, the 11th-largest by area, and the ...

Ayres Natural Bridge Park Ayres Natural Bridge Park is a county park in Converse County, Wyoming in the United States. It occupies 150 acres (0.6 km²) between the towns Glenrock and Douglas about 6 kilometers south of Interstate 25 exit 151. The park's name is der ...

Wyoming Wyoming () is a U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho to the west, Utah to the south ...

* Bell Smith Springs,

Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolita ...

* Blackwater Natural Bridge, Wyoming *

Bryce Canyon National Park Bryce Canyon National Park () is an American national park located in southwestern Utah. The major feature of the park is Bryce Canyon, which despite its name, is not a canyon, but a collection of giant natural amphitheaters along the eastern ...

* Corona Arch, Utah * Creelsboro Natural Bridge,

Delicate Arch Delicate Arch is a freestanding natural arch located in Arches National Park, near Moab, Utah, Moab in Grand County, Utah, Grand County, Utah, United States. The arch is the most widely recognized landmark in Arches National Park and is depicted ...

, Utah * Druid Arch, Utah * Eye of the Needle,

Montana Montana () is a state in the Mountain West division of the Western United States. It is bordered by Idaho to the west, North Dakota and South Dakota to the east, Wyoming to the south, and the Canadian provinces of Alberta, British Columbi ...

Goat Rock Beach Goat Rock Beach is a sand beach in northwestern Sonoma County, California, United States. This landform is a sub-unit of Sonoma Coast State Beach, owned and managed by the State of California. At the northern terminus of Goat Rock Beach is the mou ...

, California * Grosvenor Arch, Utah * Holei Sea Arch,

Hawaii Volcanoes National Park Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only state ...

Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...

* Honopū Arch, Hawaii * Koger Arch, Kentucky *

Kolob Arch Kolob Arch is a natural arch in Zion National Park, Utah, United States. According to the Natural Arch and Bridge Society (NABS), it is the sixth-longest natural arch in the world. In 2006, the Society measured the span at 287.4 ± 2 feet (87.6 m ...

Zion National Park Zion National Park is an American national park located in southwestern Utah near the town of Springdale. Located at the junction of the Colorado Plateau, Great Basin, and Mojave Desert regions, the park has a unique geography and a variety ...

, Utah *

Landscape Arch Landscape Arch is the longest of the many natural rock arches located in Arches National Park, Utah, United States and among the longest natural stone arches in the world. Description The arch is among many in the Devils Garden area in the nor ...

, Utah * La Ventana Arch,

El Malpais National Monument El Malpais National Monument is a National Monument located in western New Mexico, in the Southwestern United States. The name El Malpais is from the Spanish term '' Malpaís'', meaning ''badlands'', due to the extremely barren and dramatic volc ...

, New Mexico * Mesa Arch, Utah * Natural Arch, Kentucky *

Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth ar ...

* Natural Bridge Caverns,

Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...

*Natural Bridge of

Arkansas Arkansas ( ) is a landlocked state in the South Central United States. It is bordered by Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, and Texas and Oklahoma to the west. Its name is from the Osage ...

* Natural Bridge Park,

Alabama (We dare defend our rights) , anthem = "Alabama (state song), Alabama" , image_map = Alabama in United States.svg , seat = Montgomery, Alabama, Montgomery , LargestCity = Huntsville, Alabama, Huntsville , LargestCounty = Baldwin County, Al ...

* Natural Bridge State Park, Kentucky * Natural Bridge State Park,

Massachusetts Massachusetts (Massachusett language, Massachusett: ''Muhsachuweesut assachusett writing systems, məhswatʃəwiːsət'' English: , ), officially the Commonwealth of Massachusetts, is the most populous U.S. state, state in the New England ...

* Natural Bridge State Park,

Wisconsin Wisconsin () is a state in the upper Midwestern United States. Wisconsin is the 25th-largest state by total area and the 20th-most populous. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake M ...

, Utah * Natural Bridges State Beach, California *

, Utah * Rattlesnake Canyon,

Colorado Colorado (, other variants) is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of t ...

Rialto Beach Rialto Beach is a public beach located on the Pacific Ocean in Washington state. It is adjacent to Mora Campground in the Olympic National Park near the mouth of the Quillayute River, and is composed of an ocean beach and coastal forest. The many ...

Olympic National Park Olympic National Park is a United States national park located in the State of Washington, on the Olympic Peninsula. The park has four regions: the Pacific coastline, alpine areas, the west-side temperate rainforest, and the forests of the drier ...

Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered o ...

Rock Bridge Memorial State Park Rock Bridge Memorial State Park is a geological preserve and public recreation area encompassing , south of Columbia, Missouri, Columbia in Boone County, Missouri, Boone County, Missouri off of Missouri Route 163. The park is home to 12 caves. ...

Missouri Missouri is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it is bordered by eight states (tied for the most with Tennessee ...

Rockbridge State Nature Preserve Rockbridge State Nature Preserve is a nature reserve featuring a natural bridge located in the unincorporated community of Rockbridge in Hocking County, Ohio, United States. It is part of the Hocking Hills region, but the sandstone that forms ...

Ohio Ohio () is a state in the Midwestern region of the United States. Of the fifty U.S. states, it is the 34th-largest by area, and with a population of nearly 11.8 million, is the seventh-most populous and tenth-most densely populated. The sta ...

Sewanee Natural Bridge Sewanee Natural Bridge in Franklin County, Tennessee, is a 25 feet (8 m) high natural sandstone arch with a span of 50 feet (15 m). It is essentially a giant sinkhole partially eroded to form a large stone bridge. A wet weather spring located be ...

Tennessee Tennessee ( , ), officially the State of Tennessee, is a landlocked state in the Southeastern region of the United States. Tennessee is the 36th-largest by area and the 15th-most populous of the 50 states. It is bordered by Kentucky to th ...

, Utah * An arch at

Tettegouche State Park Tettegouche State Park ( ) is a Minnesota state park on the north shore of Lake Superior northeast of Duluth in Lake County on scenic Minnesota Highway 61. The park's name stems from the Tettegouche Club, an association of local businessmen w ...

Minnesota Minnesota () is a state in the upper midwestern region of the United States. It is the 12th largest U.S. state in area and the 22nd most populous, with over 5.75 million residents. Minnesota is home to western prairies, now given over to ...

, collapsed in 2010. * Three Arch Rocks National Wildlife Refuge,

Oregon Oregon () is a U.S. state, state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington (state), Washington, while the Snake River delineates much of it ...

* Tonto Natural Bridge,

Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...

* Twin Arches,

Big South Fork National River and Recreation Area The Big South Fork National River and Recreation Area, commonly known as Big South Fork, preserves the Big South Fork of the Cumberland River and its tributaries in northeastern Tennessee and southeastern Kentucky. Within it are reminders of ...

, Tennessee"Big South Fork National River and Recreation Area: Twin Arches"
''nps.gov''. April 14, 2015. Retrieved March 14, 2018. *

Window Rock, Arizona Window Rock ( nv, , ) is a census-designated place that serves as the seat of government and capital of the Navajo Nation, the largest territory in North America of a sovereign Native American nation. The capital lies within the boundaries of the ...

* Wrather Arch, Arizona *

Yahoo Arch Yahoo Arch is located in the Daniel Boone National Forest, in McCreary County, Kentucky. A hiking trail leads (0.8 Miles) from Yahoo Falls Historic Yahoo Falls, also known as Ywahoo Falls (possibly of Muscogee origin, from ''Yahola'', ''Yahoo' ...

, Kentucky

Oceania

Australia

Port Campbell National Park The Port Campbell National Park is a national park in the south-western district of Victoria, Australia. The national park is situated approximately south-west of Melbourne and approximately east of Warrnambool. The park is located adjacen ...

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

(one of the two spans collapsed in 1990) * Natural Bridge,

Springbrook National Park The Springbrook National Park is a protected national park that is located in the Gold Coast hinterland of Queensland, Australia. The park is situated on the McPherson Range, near Springbrook, approximately south of Brisbane. The park is p ...

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...

, Australia * Nature's Window,

Kalbarri National Park Kalbarri National Park is located north of Perth, in the Mid West region of Western Australia. The major geographical features of the park include the Murchison River gorge which runs for nearly on the lower reaches of the Murchison River. Sp ...

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...

New Zealand

* Mangapohue Natural Bridge,

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

* Oparara Basin Arches, New Zealand * "The Hole in the Rock", Piercy Island,

Cape Brett Cape Brett Peninsula ( mi, Rākaumangamanga) is a long peninsula in the Bay of Islands, in the Northland Region of New Zealand. The head of the peninsula is Cape Brett itself (also known by the Māori, ), a promontory which extends north into ...

, New Zealand *

Tunnel Beach Tunnel Beach is a locality southwest of the city centre of Dunedin, New Zealand. Located just south of St Clair, Tunnel Beach has sea-carved sandstone cliffs, rock arches and caves. Beyond the beauty of the rugged sandstone cliffs, its claim t ...

arch,

Dunedin Dunedin ( ; mi, Ōtepoti) is the second-largest city in the South Island of New Zealand (after Christchurch), and the principal city of the Otago region. Its name comes from , the Scottish Gaelic name for Edinburgh, the capital of Scotland. Th ...

, New Zealand

South America

* Arch Islands,

Falkland Islands The Falkland Islands (; es, Islas Malvinas, link=no ) is an archipelago in the South Atlantic Ocean on the Patagonian Shelf. The principal islands are about east of South America's southern Patagonian coast and about from Cape Dubouzet ...

Darwin's Arch Darwin's Arch ( es, Arco de Darwin) was a natural rock arch feature to the south-east of Darwin Island in the Galápagos Archipelago in the Pacific Ocean, and is now a pillar formation. The arch sat on an irregularly shaped, rocky, submerged ...

Galápagos Islands The Galápagos Islands (Spanish: , , ) are an archipelago of volcanic islands. They are distributed on each side of the equator in the Pacific Ocean, surrounding the centre of the Western Hemisphere, and are part of the Republic of Ecuador ...

Ecuador Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechua: ''Ikwadur Ripuwlika''; Shuar: ''Eku ...

(collapsed in 2021) *

Icononzo Icononzo () is a municipality located in the department of Tolima in Colombia. The average temperature is 21°F (-6°C), altitude 1304 metres (4278'). History In 1875 there was the community of Guamitos inherited by Don Vicente Reyes Daza. ...

Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car ...

La Portada La Portada (Spanish: "The Gateway") is a natural arch on the coast of Chile, north of Antofagasta. It is one of fifteen natural monuments included among the protected areas of Chile. There is another similar but smaller structure in the spa town ...

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

* Pedra Furada, Ceará,

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

* Pedra Furada, Piauí,

* Pedra Furada, Santa Catarina,

Puente del Inca Puente del Inca ( English "Bridge of the Inca"), is a natural arch that forms a bridge over the Las Cuevas River, a tributary of the Mendoza River. It is located near the small village of , in Las Heras Department, Mendoza Province, Argentina. ...

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

Sete Cidades National Park Sete Cidades National Park ( pt, Parque Nacional de Sete Cidades) is a national park in the state of Piauí, Brazil. Location The Sete Cidades National Park is divided between the municipalities of Brasileira (26.21%) and Piracuruca (73.77%) ...

* San Rafael Falls,

(formed in 2020, collapsed in 2021)

References

External links

The Natural Arch and Bridge Society
*
World map of many natural arches
{{Coastal geography Coastal and oceanic landforms Coastal geography Erosion landforms