Ua Huka
   HOME

TheInfoList



OR:

Ua Huka is one of the
Marquesas Islands The Marquesas Islands (; french: Îles Marquises or ' or '; Marquesan: ' ( North Marquesan) and ' ( South Marquesan), both meaning "the land of men") are a group of volcanic islands in French Polynesia, an overseas collectivity of France in ...
, in French Polynesia, an overseas territory of
France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area ...
in the
Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contin ...
. It is situated in the northern group of the archipelago, approximately to the east of
Nuku Hiva Nuku Hiva (sometimes spelled Nukahiva or Nukuhiva) is the largest of the Marquesas Islands in French Polynesia, an overseas country of France in the Pacific Ocean. It was formerly also known as ''Île Marchand'' and ''Madison Island''. Herman ...
, at .


Name

Ua Huka is sometimes also found spelled ''Roohka'' or ''Ua Huna''. The first
Western Western may refer to: Places *Western, Nebraska, a village in the US *Western, New York, a town in the US *Western Creek, Tasmania, a locality in Australia *Western Junction, Tasmania, a locality in Australia *Western world, countries that id ...
navigator A navigator is the person on board a ship or aircraft responsible for its navigation.Grierson, MikeAviation History—Demise of the Flight Navigator FrancoFlyers.org website, October 14, 2008. Retrieved August 31, 2014. The navigator's primar ...
to sight the island was
U.S. Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage o ...
Captain
Joseph Ingraham Joseph Ingraham (1762–1800) was an American sailor and maritime fur trader who discovered several islands of the Marquesas Islands while on his way to trade along the west coast of North America. He was also a prisoner in the American Revolutio ...
in 1791. He named the island "Washington Island" in honor of U.S.
President President most commonly refers to: *President (corporate title) * President (education), a leader of a college or university * President (government title) President may also refer to: Automobiles * Nissan President, a 1966–2010 Japanese ...
George Washington George Washington (February 22, 1732, 1799) was an American military officer, statesman, and Founding Father who served as the first president of the United States from 1789 to 1797. Appointed by the Continental Congress as commander of ...
, a name which was eventually extended to include all of the northern group of the Marquesas Islands. Other names for the island include ''Riou'' and ''Solide''. ''See also Names of the Marquesas Islands''. The spider genus ''
Uahuka ''Uahuka'' is a genus of South Pacific sheet weavers endemic to the Marquesas Islands that was first described by Lucien Berland in 1935. It was transferred to the family Symphytognathidae in 1972, but the transfer was rejected in 1980. The ge ...
'' is named after this island.


History

Although Ua Huka is located in the northern Marquesas,
historically History (derived ) is the systematic study and the documentation of the human activity. The time period of event before the invention of writing systems is considered prehistory. "History" is an umbrella term comprising past events as well ...
,
culturally Culture () is an umbrella term which encompasses the social behavior, institutions, and Social norm, norms found in human Society, societies, as well as the knowledge, beliefs, arts, laws, Social norm, customs, capabilities, and habits of the ...
and
linguistically Linguistics is the scientific study of human language. It is called a scientific study because it entails a comprehensive, systematic, objective, and precise analysis of all aspects of language, particularly its nature and structure. Linguis ...
the island's tribes were far more closely aligned with the southern Marquesas Islands, especially with the tribes from Pepane, in the eastern half of
Hiva Oa With its , Hiva Oa is the second largest island in the Marquesas Islands, in French Polynesia, an overseas territory of France in the Pacific Ocean. Located at 9 45' south latitude and 139 W longitude, it is the largest island of the southern Mar ...
. Ua Huka was settled by Polynesians about 1700 years ago. The first settlers lived in settlements near the beach. In 1998, at Hane, a French archaeological team explored remains of settlements buried by a dune. It is the oldest settlement in the Marquesas so far, dating to 350 AD. Five researchers found seventeen human skeletons, fishhooks, a harpoon point, net weights and scrapers. From the detritus of the settlement, it appears that the indigenous people fed mainly on fish, birds (skeletons of a dozen extinct bird species have been found) and shellfish. As in other islands of the Marquesas, as
population density Population density (in agriculture: Stock (disambiguation), standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geographical ...
increased, people settled in the upper reaches of the valleys and, favored by the enclosed location, a strictly stratified tribal society developed. From the places of worship in the valleys, it can be seen that there must have been at least five independent tribes, possibly more. Archaeological remains of cult and residential platforms are still visible in the Vaipaee, Hanei, Hokatu, Hinaehi and Hane valleys. American merchant captain Joseph Ingraham, who sailed on the brig ''Hope'' from
Boston Boston (), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th- mo ...
around
Cape Horn Cape Horn ( es, Cabo de Hornos, ) is the southernmost headland of the Tierra del Fuego archipelago of southern Chile, and is located on the small Hornos Island. Although not the most southerly point of South America (which are the Diego Ramí ...
to China, discovered Ua Huka on April 19, 1791, and named it "Washington Island" in honor of U.S. President
George Washington George Washington (February 22, 1732, 1799) was an American military officer, statesman, and Founding Father who served as the first president of the United States from 1789 to 1797. Appointed by the Continental Congress as commander of ...
. Another early 18th-century visitor was the Frenchman Étienne Marchand. He sailed from Marseilles on December 14, 1790, on the newly built merchant ship ''Solide'', rounded Cape Horn and arrived at the Marquesas in June 1791. He named Ua Huka "Île du Solide" in honor of his ship. Lieutenant Richard Hergest, commander of the ''Daedalus'', the supply
ship A ship is a large watercraft that travels the world's oceans and other sufficiently deep waterways, carrying cargo or passengers, or in support of specialized missions, such as defense, research, and fishing. Ships are generally distinguished ...
of the Vancouver expedition, arrived at Ua Huka on March 30, 1792, and christened it "Riou Island". On June 2, 1842, French Rear Admiral Abel Aubert Dupetit-Thouars took possession of the northern group of the Marquesas for France. Ua Huka became a
French colony The French colonial empire () comprised the overseas colonies, protectorates and mandate territories that came under French rule from the 16th century onward. A distinction is generally made between the "First French Colonial Empire", that exist ...
.


Geography

The island is shaped approximately like a crescent, with its concave edge facing the south. The land area is approximately 83 km2 (32 sq. mi.). The center of the island is a high plateau, deeply indented in places by narrow river valleys. The highest peak,
Hitikau Hitikau is a volcanic mountain of Ua Huka, in the Marquesas Islands of Polynesia. It has an elevation of , the highest point of the island, and lies to the northeast of the village of Hane Hane may refer to: *Hane, Marquesas Islands Hane is the l ...
reaches an elevation of . Much of the island's native plant cover, which outside the valleys consists primarily of
dryland Drylands are defined by a scarcity of water. Drylands are zones where precipitation is balanced by evaporation from surfaces and by transpiration by plants (evapotranspiration). The United Nations Environment Program defines drylands as tropical ...
scrub, has been devastated by herds of
feral A feral () animal or plant is one that lives in the wild but is descended from domesticated individuals. As with an introduced species, the introduction of feral animals or plants to non-native regions may disrupt ecosystems and has, in some ...
goat The goat or domestic goat (''Capra hircus'') is a domesticated species of goat-antelope typically kept as livestock. It was domesticated from the wild goat (''C. aegagrus'') of Southwest Asia and Eastern Europe. The goat is a member of the a ...
s and
horse The horse (''Equus ferus caballus'') is a domesticated, one-toed, hoofed mammal. It belongs to the taxonomic family Equidae and is one of two extant subspecies of ''Equus ferus''. The horse has evolved over the past 45 to 55 million yea ...
s, which are estimated to number upwards of 3,000. Ua Huka is a shield volcano that was emplaced between 2.2 and 2.4 million years ago. It is thought to have formed by a center of upwelling
magma Magma () is the molten or semi-molten natural material from which all igneous rocks are formed. Magma is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natural sa ...
called the
Marquesas hotspot The Marquesas hotspot is a volcanic hotspot in the southern Pacific Ocean. It is responsible for the creation of the Marquesas Islands – a group of eight main islands and several smaller ones – and a few seamounts. The islands and seamounts ...
. The island is served by
Ua Huka Airport Ua Huka Airport is an airport on Ua Huka in French Polynesia . The airport is 2.2 km southwest of the village of Hane. The airport was opened on November 4, 1970, with the first landings made by an Air Tahiti Piper Aztec The Piper PA-23, ...
. In contrast to the lush, larger islands of the Marquesas, Ua Huka gives a rather arid and forbidding impression, the
vegetation Vegetation is an assemblage of plant species and the ground cover they provide. It is a general term, without specific reference to particular taxa, life forms, structure, spatial extent, or any other specific botanical or geographic characte ...
is sparse. The rugged peaks are not as high as those of the other islands of the archipelago, about 600 m in the west and up to 800 m in the east. The highest elevation is Mount Hitikau, at 857 meters. The lower overall
altitude Altitude or height (also sometimes known as depth) is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The exact definition and reference datum varies according to the context ...
means less cloud
rainfall Rain is water droplets that have condensed from atmospheric water vapor and then fall under gravity. Rain is a major component of the water cycle and is responsible for depositing most of the fresh water on the Earth. It provides water f ...
. Ua Huka has a much drier climate than the neighboring
island An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island ...
s. A large part of the island is made up of extensive, arid plateaus and deep, fertile valleys in which settlements are also found. The
coast The coast, also known as the coastline or seashore, is defined as the area where land meets the ocean, or as a line that forms the boundary between the land and the coastline. The Earth has around of coastline. Coasts are important zones in ...
, very rugged, is not protected by a coral reef, so the strong waves come directly to the shores. There are several rocky islets (motus) off the main island. Motu Hane ♁♁ is especially spectacular. It is a 163-meter-high, sugarloaf-shaped rock cone off Hane Bay on the south coast. The island is 410 meters long in a north–south direction and up to 210 meters wide, and lies 250 meters south of the Tekaepa headland, which separates the Hane and Hokatu valleys.


Geology

Ua Huka is formed by the northern half of two interlocking volcanoes. The first caldera, about 10 km in diameter, contains the Vaipaee valley. The second caldera, included in the eastern half of the first, reaches 857 meters at Mount Hitikau, the List of highest mountains on Earth, highest point on the island. Its diameter is about 5 km and its age is estimated to be between 2.9 and 2.8 million years old. It contains the Hane and Hokatu valleys. The island then underwent another volcanic period in the southwest (Tepeopo scoriaceous volcano and Tahoatikihau Hawaiian volcano) dated around 1.6 - 1.4 Ma. This shows a long geological activity compared to the other islands, at least 1.5 Ma. Tahoatikihau crater contains a Lava, fossil lava lake. At the western end of the island there are several sea caves.


Flora

The
vegetation Vegetation is an assemblage of plant species and the ground cover they provide. It is a general term, without specific reference to particular taxa, life forms, structure, spatial extent, or any other specific botanical or geographic characte ...
of the plateaus of Ua Huka is poorer than that of the other Marquesan islands. Especially the northwestern part of the island, corresponding to the outer side of the large crater. Unlike the plateaus and hills, the valleys have a much more exuberant vegetation, similar to that of the other islands of the archipelago. This diversity has been enhanced by the creation of the Papuakeikaa arboretum near Vaipaee. This unique achievement in Polynesia brings together more than a thousand species of trees from all over the world, including one of the largest collections of citrus trees in the world (almost three hundred varieties). It is intended to serve as a Nature reserve, reserve for the reforestation of the island. The impoverishment of the vegetation is largely due to List of domesticated animals, domestic animals introduced by man, which have then been reintroduced into the wild. Goats, pigs and horses have largely destroyed the vegetation. Ua Huka proudly calls itself the "Island of Horses", but the serious damage they have caused is hidden. In the valleys there are small remnants of the original rainforest, consisting of Hibiscus tiliaceus, Piper latifolium and Metrosideros and Weinmannia. In the humid and shady areas of the narrow gorges grow lush masses of moss and ferns. In the west of the island, the rainforest changes to a drier forest, composed mainly of hibiscus, pandanus, guavas and glochidion. In the lower areas of the large valleys, coconut and breadfruit trees have been planted. There is still a remnant of Pisonia grandis in the lower reaches of Hane Bay. The short valleys of the north coast are almost devoid of vegetation, and the upper parts of the mountains are even arid and desert-like.


Fauna

Because of the sparse vegetation, there are only a few species of native land animals on Ua Huka, mainly insects, lizards, land birds and spiders. The island has given its name to a genus of spiders endemic to the Marquesas, which belongs to the canopy spider family (Linyphiidae). This is due to two main factors: the drier climate and the large number of
goat The goat or domestic goat (''Capra hircus'') is a domesticated species of goat-antelope typically kept as livestock. It was domesticated from the wild goat (''C. aegagrus'') of Southwest Asia and Eastern Europe. The goat is a member of the a ...
s and
horse The horse (''Equus ferus caballus'') is a domesticated, one-toed, hoofed mammal. It belongs to the taxonomic family Equidae and is one of two extant subspecies of ''Equus ferus''. The horse has evolved over the past 45 to 55 million yea ...
s that graze freely there, contributing to deforestation. Ua Huka is also known as the "horse island" and it is said that there are more horses than people on the island. The number of horses and goats is said to be around 3,000. Life is richer around the island: giant tortoises in Haavei Bay, sharks, dolphins, manta rays and thousands of seabirds live on the islets. In particular, Hemeni and Teuaua, also known as the "bird islands", are home to a large colony of terns. The Polynesian Ornithological Society "MANU" lists 35 species of birds on Ua Huka, 16 marine and 17 terrestrial, 8 of which are endemic. Its forests also contain the last specimens of the Iphis monarch, a small passerine bird. There are six endemic and critically endangered landbird species in Ua Huka: * Iphis monarch (''Pomarea iphis'') * Marquesas warbler (Southern Marquesan reed warbler, ''Acrocephalus mendanae'') * Marquesas salangana (Marquesan swiftlet, ''Callocalia ocista'') * Marquesas pigeon (''Ducula galeata'') * Ultramarine lorikeet ''pihiti'' (''Vini ultramarina'') * White-headed fruit pigeon (White-capped fruit dove, ''Ptilinopus dupetithouarsii'') As for large animals, there are only species introduced by man: horses, goats and feral pigs.


Administration

Administratively Ua Huka forms the commune in France, commune (municipality) of Ua-Huka, part of the French Polynesia#Administrative divisions, administrative subdivision of the
Marquesas Islands The Marquesas Islands (; french: Îles Marquises or ' or '; Marquesan: ' ( North Marquesan) and ' ( South Marquesan), both meaning "the land of men") are a group of volcanic islands in French Polynesia, an overseas collectivity of France in ...
.Décret n° 2005-1611 du 20 décembre 2005 pris pour l'application du statut d'autonomie de la Polynésie française
Légifrance
This commune consists solely of the island of Ua Huka itself.Décret n°72-407 du 17 mai 1972 portant création de communes dans le territoire de la Polynésie française
Légifrance
The administrative centre of the commune is the settlement of Hane, Marquesas Islands, Hane.


Demography

The people of Ua Huka live on the south coast in the villages of Vaipaee, Hane and Hokatu. These three villages are part of the commune of Ua Huka. The
island An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island ...
had 584 inhabitants in the 2002 census, a number that increased to 678 inhabitants according to 2017Répartition de la population en Polynésie française en 2017
Institut de la statistique de la Polynésie française
figures, 13 living mainly in the villages of Vaipae and Hane. Population growth is one of the lowest in the Marquesas, mainly due to emigration. As there is no secondary school on the island, young people are forced to leave at a very young age, first to Nuku Hiva and then to Papeete for higher education. Many do not return to Ua Huka afterwards.


Languages

The languages spoken on Ua Huka are mainly French (the only official language) and Marquesan, with one peculiarity: the dialect spoken here contains elements of the northern and southern Marquesan languages (to a lesser extent). The southern elements are very close to a dialect spoken by the inhabitants of the island of Tahuata, which shows that there were frequent exchanges between the two islands before the arrival of Westerners. Tahitian language, Tahitian is spoken by a minority.


Religion

The majority of the population, like the other Marquesan Islands, is Christian, as a result of missionary activity by both Catholic Church, Catholic and Protestant groups. The Catholic Church controls at least 3 religious buildings on the island which are under the administration of the Diocese of Taiohae (''Dioecesis Taiohaënus seu Humanae Telluris''; ''Diocèse de Taiohae ou Tefenuaenata''): The Church of Thérèse of Lisieux, Saint Therese of the Infant Jesus in Hane (''Église de Sainte-Thérèse-de-l'Enfant-Jésus''), the Church of Christ the King in Hotaku (''Église du Christ-Roi'') and the Church of the Immaculate Conception in Vaipaee (''Église de l'Immaculée Conception'').


Economy

Ua Huka's economy revolves around three main areas: agriculture, handicrafts and tourism. The currency is (still) the CFP franc, which is pegged to the euro. Agriculture is based on free-ranging horses and goats, but also on fishing, copra and, more recently, citrus fruits. Hunting wild
goat The goat or domestic goat (''Capra hircus'') is a domesticated species of goat-antelope typically kept as livestock. It was domesticated from the wild goat (''C. aegagrus'') of Southwest Asia and Eastern Europe. The goat is a member of the a ...
s, collecting shells, birds' eggs and fruit complete the diet. Although the primary economic activity remains the production of copra, Ua Huka has rich resources for tourism, including restorations of various archæological sites, museums displaying the former glory of Marquesan culture, Marquesan civilization, and the preservation of the island's unique Marquesas botany, flora. Among the archæological remains at sites such as Tehavea and Meiaute are ancient petroglyphs and thousands of bird bones. The Pupuakeiha Arboretum consists of planted with over 300 species of trees. It is hoped that one day this wealth of species will be able to be used to reforest the island. On the western end of the island are found a number of sea-caves. Crafts consist mainly of wood carving, for which the inhabitants of Ua Huka are renowned, which is rather paradoxical given the small area occupied by trees. Some craftsmen choose to go to other islands to practise their trade more easily. The most commonly carved objects are puzzles, spears, plates and bracelets. The most commonly used species are miro (rosewood), tou (Cordia subcordata), toa (ironwood, for jigsaw puzzles) and sandalwood. Other crafts include stone carving (tikis, mortars), bone carving (forks, hooks), tapa making and the production of monoi oil, jams and other fruit products. Also in this land of horses, craftsmen work with leather, including the saddles that have replaced the old wooden saddles.


Tourism

Tourism allows locals to sell their handicrafts, especially when the Aranui passes through regularly. Of course, visitors can go horseback riding; it is also possible to tour the island by boat. Tourists can also visit the arboretum and the island's six museums. Some hostels offer boarding accommodation. The wealth of tourism is based on the restoration of the many archaeological sites, the exhibition of archaeological remains in two museums, and the preservation of the flora in the only Polynesian botanical garden. Among the archaeological remains are ancient petroglyphs. To the west is the mysterious "grotto of the steps". This is a grotto accessible only by sea where there are footprints. The most important archaeological site on the
island An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island ...
is Meiaute, at the foot of Mount Hitikau on the south coast. It is an extensive complex of stone platforms, only partially exposed, with paepae (living platforms) and mea'e (ceremonial platforms), as well as three red tufa tiki, up to a metre high. At Vaikivi, in the Vaipaee valley and only accessible on foot, there are about 50 carved petroglyphs, including faces (masks?), geometric figures and, unique to the Marquesas, a sailing canoe. More petroglyphs can be found in the upper, now uninhabited area of the Hane Valley, as well as numerous remains of residential and ceremonial platforms. The village of Hokatu, the smallest of the island's three villages, is known for its excellent woodcarvers. There is also a small community museum with an interesting collection of seashells, as well as historical artefacts belonging to the village families. In Manihina, two kilometres east of the village of Vaipaee, the then mayor Leon Litchlé founded a botanical garden in 1974, the 17-hectare Pupuakeiha Arboretum, where more than 300 species of trees have been planted. It allows visitors to see how the trees have adapted to the Marquesan soil and to select varieties to reforest the island, and preserves many of the species native to the region. Of special interest to visitors are the unique large-leaved Marquesas palms (Pelagodoxa, Pelagodoxa henryana) and the collection of more than 100 species of citrus trees. The island's most beautiful white beach is at Manihina, also a good place for snorkelling. There are other small black and grey sand beaches in Haavai and Hane Bays.


Culture

The island has several archaeological sites as well as interesting natural sites (the "Invisible Bay" of Vaipaee, the bays of Haavei and Hatuana, the "Cave of Footprints" containing a beach where footprints reappear after each tide, etc.). Despite its small population, Ua Huka has no less than six museums, including: * the Vaipaee Archaeological Museum: opened in 1989, it contains numerous traditional and handicraft objects, many of them donated by the people themselves (tikis, wood carvings, tapa bark raffia, decorated popoi bowls, bracelets, earrings, shovels, U'u sticks and native stone tools). It also has ethnographic documents, precious testimonies of the Marquesan culture. * Hane Sea Museum: has an exhibition of traditional fishing techniques and a collection of canoes from all eras by Joseph Vaatete, the museum's curator. * Geology, Geological Museum, Hakatu * Petroglyph Museum, Hakatu * Rock (geology), Stone Museum, in Hakatu * Garden Forest Museum: located in the arboretum In each village there is also a handicraft exhibition centre. Every year in June, a competition is held among the craftsmen of Ua Huka to copy old objects. This ensures that the ancient techniques of carving and engraving are not lost.


Politics and government

The island is currently politically part of the Overseas France, Overseas Country (''Pays d'outre-mer'' - POM) of French Polynesia and is therefore affiliated with the European Union. It is administered by a subdivision (Subdivision administrative des Îles Marquises) of the High Commissariat of the Republic in French Polynesia (Haut-commissariat de la République en Polynésie française) based in Papeete. Ua Huka forms an independent municipality (Commune de Ua Huka) with 633 inhabitants (2012).Institut Statistique de Polynésie Française (ISPF) – Recensement de la population 2012. The population density is about 7 inhabitants/km2. The official language is French language, French. There are three villages in Ua Huka, all on the south coast: Vaipaee, Hane and Hokatu. The main village and seat of local government is the village of Vaipaee. Vaipaee is the largest and Hokatu the smallest of the three settlements. The entire northern part of the island is uninhabited.


Infrastructure

Ua Huka is supplied with goods not produced on the island by a cargo and passenger ship that arrives regularly from Tahiti. The ''Aranui 5'' calls at Ua Huka once a month. This is also the best way for tourists to reach the island. The ship cannot dock at Vaipaee's small pier, so it has to be loaded and unloaded by boats. Opened in 1972, Ua Huka Airport (IATA: UAH, ICAO: NTMU) consists of a single 755 m asphalt runway and is located between the villages of Vaipaee and Hane. It is served exclusively by Air Tahiti with small aircraft via Nuku Hiva (flight time approximately 30 minutes). The three villages and the airfield are connected by a paved road, the rest of the island is undeveloped or accessible only by roads and trails. The Tourism, tourist infrastructure is modest. There are no hotels, but there are a few privately run guesthouses, restaurants, and small shops with a limited range of products, open at the discretion of the owners. There is no bank on the island and credit cards are not accepted (since 2000). In Vaipaee, the most populated village, there is a town hall with local administration, a post office (with satellite phone), a first aid station, a nursery and a primary school (''école maternelle et primaire''). Secondary schools and qualified medical care are only available in Nuku Hiva and Papeete.


See also

*Overseas France *Dependent territory


References

{{authority control Ua Huka, Islands of the Marquesas Islands Communes of French Polynesia Shield volcanoes Hotspot volcanoes