The Antofagasta Region (, ) is one of Chile's sixteen first-order administrative divisions. Being the second-largest region of Chile in area, it comprises three provinces,

Antofagasta Antofagasta () is a port city in northern Chile, about north of Santiago. It is the capital of Antofagasta Province and Antofagasta Region. According to the 2015 census, the city has a population of 402,669. Once claimed by Bolivia follo ...

El Loa El Loa Province () is one of three provinces of the northern Chilean region of Antofagasta (II). It is named after the longest of rivers in Chile, the Loa River. The provincial capital is Calama. Geography and demography According to the 2012 ...

and

Tocopilla Tocopilla is a city and commune in the Antofagasta Region, in the north of Chile. It is the capital of the province that bears the same name. Every year Tocopilla celebrates its anniversary on 29 September with a big show the day before, which ...

. It is bordered to the north by

Tarapacá San Lorenzo de Tarapacá, also known simply as Tarapacá, is a town in the region of the same name in Chile. History The town has likely been inhabited since the 12th century, when it formed part of the Inca trail. When Spanish explorer Diego ...

, by

Atacama The Atacama Desert () is a desert plateau located on the Pacific coast of South America, in the north of Chile. Stretching over a strip of land west of the Andes Mountains, it covers an area of , which increases to if the barren lower slopes ...

to the south, and to the east by

Bolivia Bolivia, officially the Plurinational State of Bolivia, is a landlocked country located in central South America. The country features diverse geography, including vast Amazonian plains, tropical lowlands, mountains, the Gran Chaco Province, w ...

and

Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

. The region's capital is the port city of

; another one of its important cities is Calama. The region's main economic activity is

copper mining Copper extraction is the multi-stage process of obtaining copper from list of copper ores, its ores. The conversion of copper ores consists of a series of physical, chemical, and electrochemical processes. Methods have evolved and vary with coun ...

in its giant inland porphyry copper systems. Antofagasta's

climate Climate is the long-term weather pattern in a region, typically averaged over 30 years. More rigorously, it is the mean and variability of meteorological variables over a time spanning from months to millions of years. Some of the meteoro ...

is extremely arid, albeit somewhat milder near the coast. Nearly all of the region is devoid of vegetation, except close to the

Loa River The Loa River (Spanish: Río Loa) is a U-shaped river in Chile's northern Antofagasta Region. At long, it is the country's longest river and the main watercourse in the Atacama Desert. Course The Loa's sources are located on Andean mountain sl ...

and at oases such as

San Pedro de Atacama San Pedro de Atacama is a Chilean town and commune in El Loa Province, Antofagasta Region. It is located east of Antofagasta, some 106 km (60 mi) southeast of Calama and the Chuquicamata copper mine, overlooking the Licancabur volcan ...

. Much of the inland is covered by salt flats,

tephra Tephra is fragmental material produced by a Volcano, volcanic eruption regardless of composition, fragment size, or emplacement mechanism. Volcanologists also refer to airborne fragments as pyroclasts. Once clasts have fallen to the ground, ...

and

lava flow Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a Natural satellite, moon onto its surface. Lava may be erupted at a volcano or through a Fissure vent, fractu ...

s, and the coast exhibits prominent cliffs. The region was sparsely populated by indigenous

Changos The Changos, also known as Camanchacos or Camanchangos, are an Indigenous people or group of peoples who inhabited a long stretch of the Pacific coast from southern Peru to north-central Chile, including the coast of the Atacama Desert. Although ...

and

Atacameños The Atacama people, also called Atacameño, are an Indigenous people from the Atacama Desert and altiplano region in the north of Chile and Argentina and southern Bolivia, mainly the Antofagasta Region. According to the Argentinean Census in 201 ...

until massive Chilean immigration in conjunction with a

saltpeter Potassium nitrate is a chemical compound with a sharp, salty, bitter taste and the chemical formula . It is a potassium salt of nitric acid. This salt consists of potassium cations and nitrate anions , and is therefore an alkali metal nitrate ...

boom in the later 19th century. Most of the region was organised as

's only coastal territory until Chilean takeover in 1879 at the onset of the

War of the Pacific The War of the Pacific (), also known by War of the Pacific#Etymology, multiple other names, was a war between Chile and a Treaty of Defensive Alliance (Bolivia–Peru), Bolivian–Peruvian alliance from 1879 to 1884. Fought over Atacama Desert ...

History

Antofagasta's history is divided, as the territory itself, into two sections: the coastal region, and the highlands plateau or

altiplano The Altiplano (Spanish language, Spanish for "high plain"), Collao (Quechuan languages, Quechua and Aymara language, Aymara: Qullaw, meaning "place of the Qulla people, Qulla") or Andean Plateau, in west-central South America, is the most extens ...

around the

Andes The Andes ( ), Andes Mountains or Andean Mountain Range (; ) are the List of longest mountain chains on Earth, longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range ...

. In pre-Columbian times, the coastline was populated by nomadic fishing clans of

Indians, of which very little is known due to very limited contact with the Spanish conquerors. The inland section was populated by the Atacaman culture around the great dry salt lake

Salar de Atacama Salar de Atacama, located south of San Pedro de Atacama, is the largest Salt pan (geology), salt flat in Chile. It is surrounded by mountains and lacks drainage outlets. To the east, it is enclosed by the main chain of the Andes, while to the wes ...

, the

basin, and valleys and oases across the altiplano, with the most important settlement being the village of

. The Atacaman culture was deeply influenced by

Tiwanaku Tiwanaku ( or ) is a Pre-Columbian archaeological site in western Bolivia, near Lake Titicaca, about 70 kilometers from La Paz, and it is one of the largest sites in South America. Surface remains currently cover around 4 square kilometers and in ...

culture and later fell under

Inca The Inca Empire, officially known as the Realm of the Four Parts (, ), was the largest empire in pre-Columbian America. The administrative, political, and military center of the empire was in the city of Cusco. The History of the Incas, Inca ...

rule. The Atacamans harvested mainly corn and beans and developed trade as far as the

Amazon basin The Amazon basin is the part of South America drained by the Amazon River and its tributary, tributaries. The Amazon drainage basin covers an area of about , or about 35.5 percent of the South American continent. It is located in the countries ...

and Pacific shores. The arrival of the Spaniards in the 16th century did not destroy the culture but transformed it deeply through the process of

mestizaje ( , ; fem. , literally 'mixed person') is a term primarily used to denote people of mixed Ethnic groups in Europe, European and Indigenous ancestry in the former Spanish Empire. In certain regions such as Latin America, it may also refer to ...

, in which both cultures mixed. Under Spanish rule, Atacaman territory was placed under the administration of the Audiencia Real de Charcas, though it is disputed whether the Audiencia Real de Charcas was to administer only the inland portion or the coast as well. At the time of independence general

Simón Bolívar Simón José Antonio de la Santísima Trinidad Bolívar y Palacios (24July 178317December 1830) was a Venezuelan statesman and military officer who led what are currently the countries of Colombia, Venezuela, Ecuador, Peru, Panama, and Bol ...

integrated it into the new Republic of

, under the name of "

Litoral Department The Department of the Litoral, also known as the Atacama Department and commonly known as the Bolivian coast, was the description of the extent of the Pacific coast of the Atacama Desert included in the territory of Bolivia from its inception in ...

". This decision was disputed by the Chilean Government and has been a source of conflict until present times. Chile claimed that according to the

Uti possidetis ''Uti possidetis'' is an expression that originated in Roman private law, where it was the name of a procedure about possession of land. Later, by a misleading analogy, it was transferred to international law, where it has had more than one mean ...

of the Spanish crown, the coastal region belong to them and their territory bordered directly with

Peru Peru, officially the Republic of Peru, is a country in western South America. It is bordered in the north by Ecuador and Colombia, in the east by Brazil, in the southeast by Bolivia, in the south by Chile, and in the south and west by the Pac ...

. Chilean explorers such as Juan López and José Santos Ossa discovered rich

nitrate Nitrate is a polyatomic ion with the chemical formula . salt (chemistry), Salts containing this ion are called nitrates. Nitrates are common components of fertilizers and explosives. Almost all inorganic nitrates are solubility, soluble in wa ...

and

guano Guano (Spanish from ) is the accumulated excrement of seabirds or bats. Guano is a highly effective fertiliser due to the high content of nitrogen, phosphate, and potassium, all key nutrients essential for plant growth. Guano was also, to a le ...

deposits which produced a massive Chilean colonization of the coastline. Friction between the new settlers from both countries grew until 1879 when the

erupted. Antofagasta was permanently annexed by the Chilean government at the end of the war. Colonization by Chileans followed mainly from Norte Chico (the contemporary regions of

and

Coquimbo Coquimbo is a port List of cities in Chile, city, Communes of Chile, commune and capital of the Elqui Province, located on the Pan-American Highway, in the Coquimbo Region of Chile. Coquimbo is situated in a valley south of La Serena, Chile, La S ...

, also known as the III and IV regions), into the new territories of Antofagasta and

, known as

Norte Grande The Norte Grande (''Big North'', ''Far North'', ''Great North'') is one of the five natural regions into which CORFO divided continental Chile in 1950. It borders Peru to the north, the Pacific Ocean to the west, the Altiplano, Bolivia and A ...

. In the early 20th century the region became a significant base of Chile's union-organizing movements. It continued to depend economically on the nitrate-extraction industry until its replacement by copper mining. Two of the largest and richest open pit mines in the world are located inland from Antofagasta: La Escondida and

Chuquicamata Chuquicamata ( ; referred to as Chuqui for short) is the largest open-pit mining, open pit copper Mining, mine in terms of excavated volume in the world. It is located in the north of Chile, just outside Calama, Chile, Calama, at above sea level. ...

Administration

Each province in the region is further subdivided into

communes A commune is an alternative term for an intentional community. Commune or comună or comune or other derivations may also refer to: Administrative-territorial entities * Commune (administrative division), a municipality or township ** Communes of ...

Geography

The main river is the

Loa , also called loa, are spirits in the African diaspora religions, African diasporic religion of Haitian Vodou and Dominican Vudú. They have also been incorporated into some revivalist forms of Louisiana Voodoo. Many of the lwa derive their iden ...

. Along the Coastal Cordillera lies

Atacama Fault The Atacama Fault Zone (AFZ) is an extensive system of faults cutting across the Chilean Coastal Cordillera in Northern Chile between the Andean Mountain range and the Pacific Ocean. The fault system is north–south striking and runs for more ...

. The area of the Coastal Cordillera around the fault is rich in iron ore constituting the northern part of the so-called

Chilean Iron Belt The Chilean Iron Belt is a geological province rich in iron ore deposits in northern Chile. It extends as a north-south beld along the western part of the Chilean regions of Coquimbo and Atacama, chiefly between the cities of La Serena and Talt ...

. These ore deposits are often of the manto-type deposits and are chiefly emplaced on rocks of La Negra Formation.

Climate

A Visible and Infrared Survey Telescope for Astronomy Before Sunset

The average rainfall in the

is just per year. From the coast, east to the

Chilean Coast Range The Chilean Coastal Range () is a mountain range that runs from north to south along the Pacific Ocean, Pacific coast of South America parallel to the Andes, Andean Mountains, extending from Morro de Arica in the north to Taitao Peninsula, where ...

, is the south-central part of the

Atacama Desert The Atacama Desert () is a desert plateau located on the Pacific Ocean, Pacific coast of South America, in the north of Chile. Stretching over a strip of land west of the Andes Mountains, it covers an area of , which increases to if the barre ...

, the driest desert in the world. Further to the east, it is part of the less arid

Central Andean dry puna The Central Andean dry puna (NT1001) is an ecoregion in the montane grasslands and shrublands biome, located in the Andean Altiplano (high plateau) in South America. It is a part of the Puna grassland. Setting This ecoregion occupies the southwe ...

ecoregion. The surroundings of abandoned Yungay town have been named the driest place in the world.

Demography

Most of the population lives on the coast in

and

Mejillones Mejillones is a Chilean port city and commune in Antofagasta Province in the Antofagasta Region. Its name is the plural form of the Spanish meaning "mussel", referring to a particularly abundant species and preferred staple food of its indigen ...

, or in Calama in the interior, the hub of the mining industry and the home of a large part of its work force. In the late 19th and early 20th centuries, immigrant settlers also arrived from Europe (mainly

Croatians The Croats (; , ) are a South Slavic ethnic group native to Croatia, Bosnia and Herzegovina and other neighboring countries in Central and Southeastern Europe who share a common Croatian ancestry, culture, history and language. They also f ...

, Italians,

Spaniards Spaniards, or Spanish people, are a Romance-speaking ethnic group native to the Iberian Peninsula, primarily associated with the modern nation-state of Spain. Genetically and ethnolinguistically, Spaniards belong to the broader Southern a ...

Greeks Greeks or Hellenes (; , ) are an ethnic group and nation native to Greece, Greek Cypriots, Cyprus, Greeks in Albania, southern Albania, Greeks in Turkey#History, Anatolia, parts of Greeks in Italy, Italy and Egyptian Greeks, Egypt, and to a l ...

, English, French, and Portuguese peoples), from the

Levant The Levant ( ) is the subregion that borders the Eastern Mediterranean, Eastern Mediterranean sea to the west, and forms the core of West Asia and the political term, Middle East, ''Middle East''. In its narrowest sense, which is in use toda ...

, and in smaller numbers from China, Japan,

Korea Korea is a peninsular region in East Asia consisting of the Korean Peninsula, Jeju Island, and smaller islands. Since the end of World War II in 1945, it has been politically Division of Korea, divided at or near the 38th parallel north, 3 ...

and

. Various immigration flows joined with the culture of the altiplano region creating the modern culture of the north of Chile, which arguably presents more Andean- and multi-European-features than the Central Valley and mainstream Chilean culture.

Economy

The Antofagasta Region is the heart of the mining industry, Chile's main source of export revenue. It represents 53% of Chile's mining output, led by copper and followed by

potassium nitrate Potassium nitrate is a chemical compound with a sharp, salty, bitter taste and the chemical formula . It is a potassium salt of nitric acid. This salt consists of potassium cations and nitrate anions , and is therefore an alkali metal nit ...

, gold,

iodine Iodine is a chemical element; it has symbol I and atomic number 53. The heaviest of the stable halogens, it exists at standard conditions as a semi-lustrous, non-metallic solid that melts to form a deep violet liquid at , and boils to a vi ...

, and

lithium Lithium (from , , ) is a chemical element; it has chemical symbol, symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard temperature and pressure, standard conditions, it is the least dense metal and the ...

, which means it could have had

GDP per capita This is a list of countries by nominal GDP per capita. GDP per capita is the total value of a country's finished goods and services (gross domestic product) divided by its total population (per capita). Gross domestic product (GDP) per capita is ...

higher than

Luxembourg Luxembourg, officially the Grand Duchy of Luxembourg, is a landlocked country in Western Europe. It is bordered by Belgium to the west and north, Germany to the east, and France on the south. Its capital and most populous city, Luxembour ...

had it had a large degree of autonomy. The mining industry regularly accounts for more than 90% of the region's exports. In 2024 mining stood for 69% of the region's

GDP Gross domestic product (GDP) is a monetary measure of the total market value of all the final goods and services produced and rendered in a specific time period by a country or countries. GDP is often used to measure the economic performance o ...

Fishing Fishing is the activity of trying to catch fish. Fish are often caught as wildlife from the natural environment (Freshwater ecosystem, freshwater or Marine ecosystem, marine), but may also be caught from Fish stocking, stocked Body of water, ...

and manufacturing also contribute to the income of the area. The availability of infrastructure and services, due to the region's mining boom, together with its abundance of beautiful natural scenery, have opened vast prospects for the travel industry, both in the interior and on the coast. Interesting tourist attractions include the small town of

, once the center of the Atacameño culture, Atacama Salt Flat, the Valley of the Moon, the Quitor Pukará, the Puritama hot springs and the numerous astronomical observatories including the

Very Large Telescope The Very Large Telescope (VLT) is an astronomical facility operated since 1998 by the European Southern Observatory, located on Cerro Paranal in the Atacama Desert of northern Chile. It consists of four individual telescopes, each equipped with ...

and

ALMA Alma or ALMA may refer to: Arts and entertainment * ''Alma'' (film), a 2009 Spanish short animated film * ''Alma'', an upcoming film by Sally Potter * ''Alma'' (Oswald de Andrade novel), 1922 * ''Alma'' (Le Clézio novel), 2017 * ''Alma'' ( ...

References

External links

Gobierno Regional de Antofagasta
Official website
Touristic attractions in Antofagasta
capelight.com {{Authority control Regions of Chile