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84-517: The mountain is a large caldera , in the form of a ring mountain (a so-called tuff ring ) with a diameter of about 4 km and has been formed by an explosion when rising magma met groundwater and superheated it. It is formed of an indistinctly bedded red-brown microbreccia, made up of finely fragmented rocks of the Nama System that were blown out when the caldera collapsed about 80 million years ago. The breccia layers slope inwards (unlike

168-647: A World Heritage Site in Tenerife . Mount Teide is the highest peak in Spain and the 3rd tallest volcano in the world , measured from its base on the ocean floor. The islands have warm summers and winters warm enough for the climate to be technically tropical at sea level. The amount of precipitation and the level of maritime moderation vary depending on location and elevation. The archipelago includes green areas as well as semi-desert. The islands' high mountains are ideal for astronomical observation, because they lie above

252-444: A biosphere reserve by UNESCO . Geologically it is one of the oldest of the archipelago. The insular capital is San Sebastian de La Gomera . Garajonay National Park is located on the island. Lanzarote is the easternmost island and one of the oldest of the archipelago, and it has shown evidence of recent volcanic activity. It has a surface of 845.94 km (326.62 sq mi), and a population of 149,183 inhabitants, including

336-681: A 2024 study by the University of Las Palmas de Gran Canaria, there is archaeological evidence that the Romans were the first to colonise the islands, during the period from the 1st century BCE to the 1st century CE. There was no overlap with the occupation by the people who were inhabiting the islands at the time of the Spanish conquest, who had first arrived sometime between the 1st and 3rd centuries CE. As José Farrujia describes, 'The indigenous Canarians lived mainly in natural caves, usually near

420-463: A caldera are sometimes described as "caldera volcanoes". The term caldera comes from Spanish caldera , and Latin caldaria , meaning "cooking pot". In some texts the English term cauldron is also used, though in more recent work the term cauldron refers to a caldera that has been deeply eroded to expose the beds under the caldera floor. The term caldera was introduced into

504-409: A caldera, possibly an ash-flow caldera. The volcanic activity of Mars is concentrated in two major provinces: Tharsis and Elysium . Each province contains a series of giant shield volcanoes that are similar to what we see on Earth and likely are the result of mantle hot spots . The surfaces are dominated by lava flows, and all have one or more collapse calderas. Mars has the tallest volcano in

588-400: A diameter of 290 km (180 mi). The average caldera diameter on Mars is 48 km (30 mi), smaller than Venus. Calderas on Earth are the smallest of all planetary bodies and vary from 1.6–80 km (1–50 mi) as a maximum. The Moon has an outer shell of low-density crystalline rock that is a few hundred kilometers thick, which formed due to a rapid creation. The craters of

672-577: A large degree of autonomy. In fact, the islands do not enjoy any special degree of autonomy, as each one of the Spanish regions is considered an autonomous community , with equal status to the European ones. Under the Law of the Sea , the only islands not granted territorial waters or an exclusive economic zone (EEZ) are those that are not fit for human habitation, or do not have an economic life of their own, which

756-412: A large explosive volcanic eruption (see Tambora in 1815), but also during effusive eruptions on the flanks of a volcano (see Piton de la Fournaise in 2007) or in a connected fissure system (see Bárðarbunga in 2014–2015). If enough magma is ejected, the emptied chamber is unable to support the weight of the volcanic edifice above it. A roughly circular fracture , the "ring fault", develops around

840-702: A single event, it can cause catastrophic environmental effects. Even small caldera-forming eruptions, such as Krakatoa in 1883 or Mount Pinatubo in 1991, may result in significant local destruction and a noticeable drop in temperature around the world. Large calderas may have even greater effects. The ecological effects of the eruption of a large caldera can be seen in the record of the Lake Toba eruption in Indonesia . At some points in geological time , rhyolitic calderas have appeared in distinct clusters. The remnants of such clusters may be found in places such as

924-427: A site occupied from 1,600 years ago up until the 1960s, round stone houses, complex burial sites, and associated artefacts have been found. Across the islands are thousands of Libyco-Berber alphabet inscriptions scattered and they have been extensively documented by many linguists. The social structure of indigenous Canarians encompassed "a system of matrilineal descent in most of the islands, in which inheritance

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1008-601: A substantial part of North America in up to two metres of debris. Eruptions forming even larger calderas are known, such as the La Garita Caldera in the San Juan Mountains of Colorado , where the 5,000 cubic kilometres (1,200 cu mi) Fish Canyon Tuff was blasted out in eruptions about 27.8 million years ago. The caldera produced by such eruptions is typically filled in with tuff, rhyolite , and other igneous rocks . The caldera

1092-442: A volcanic ridge on La Palma, in 2021 . The Teide volcano on Tenerife is the highest mountain in Spain, and the third tallest volcano on Earth on a volcanic ocean island. All the islands except La Gomera have been active in the last million years. Four of them, Lanzarote, Tenerife, La Palma and El Hierro, have historical records of eruptions since European discovery. The islands rise from Jurassic oceanic crust associated with

1176-501: Is La Graciosa , which administratively is dependent on Lanzarote. The archipelago includes many smaller islands and islets, including Alegranza , Isla de Lobos , Montaña Clara , Roque del Oeste , and Roque del Este . It includes a number of rocks, including Garachico and Anaga . In ancient times, the island chain was often referred to as "the Fortunate Isles". The Canary Islands are the southernmost region of Spain , and

1260-513: Is 1,560 km (600 sq mi). Roque Nublo 1,813 metres (5,948 feet) and Pico de las Nieves ("Peak of Snow") 1,949 metres (6,394 feet) are located in the center of the island. On the south of the island are the Maspalomas Dunes (Gran Canaria). La Gomera (informally known as 'Isla Colombina') has an area of 369.76 km (142.77 sq mi) and is the second least populous island with 21,136 inhabitants. It has been declared

1344-446: Is formed through subsidence and collapse rather than an explosion or impact. Compared to the thousands of volcanic eruptions that occur over the course of a century, the formation of a caldera is a rare event, occurring only a few times within a given window of 100 years. Only eight caldera-forming collapses are known to have occurred between 1911 and 2018, with a caldera collapse at Kīlauea , Hawaii in 2018. Volcanoes that have formed

1428-691: Is heated by solid flexing due to the tidal influence of Jupiter and Io's orbital resonance with neighboring large moons Europa and Ganymede , which keep its orbit slightly eccentric . Unlike any of the planets mentioned, Io is continuously volcanically active. For example, the NASA Voyager 1 and Voyager 2 spacecraft detected nine erupting volcanoes while passing Io in 1979. Io has many calderas with diameters tens of kilometers across. Canary Islands The Canary Islands ( / k ə ˈ n ɛər i / , Spanish : Canarias , Spanish: [kaˈnaɾjas] ), also known informally as

1512-496: Is mostly concentrated in the two capital islands: around 43% on the island of Tenerife and 40% on the island of Gran Canaria. The Canary Islands, especially Tenerife, Gran Canaria, Fuerteventura, and Lanzarote, are a major tourist destination, with over 16 million visitors in 2023. This is due to their beaches, subtropical climate , and important natural attractions, especially Maspalomas in Gran Canaria and Mount Teide ,

1596-722: Is not the case of the Canary Islands. There are some pro-independence political parties, like the National Congress of the Canaries (CNC) and the Popular Front of the Canary Islands . Their popular support is almost insignificant, with no presence in either the autonomous parliament or the cabildos insulares . In a 2012 study by the Centro de Investigaciones Sociológicas , when asked about national identity,

1680-464: Is now western Morocco in the early first century  AD . That same naval force was subsequently sent on an exploration of the Canary Islands, using Mogador as their mission base. The names given by Romans to the individual islands were Ninguaria or Nivaria (Tenerife), Canaria (Gran Canaria), Pluvialia or Invale (Lanzarote), Ombrion (La Palma), Planasia (Fuerteventura), Iunonia or Junonia (El Hierro) and Capraria (La Gomera). From

1764-584: Is retained in their depiction on the islands' coat-of-arms. Other theories speculate that the name comes from the Nukkari Berber tribe living in the Moroccan Atlas, named in Roman sources as Canarii , though Pliny again mentions the relation of this term with dogs. The name of the islands is not derived from the canary bird ; rather, the birds are named after the islands. From west to east,

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1848-598: Is surrounded by an outflow sheet of ash flow tuff (also called an ash flow sheet ). If magma continues to be injected into the collapsed magma chamber, the center of the caldera may be uplifted in the form of a resurgent dome such as is seen at the Valles Caldera , Lake Toba , the San Juan volcanic field, Cerro Galán , Yellowstone , and many other calderas. Because a silicic caldera may erupt hundreds or even thousands of cubic kilometers of material in

1932-471: Is the highest peak of Spain and a World Heritage Site . Tenerife is the site of the worst air disaster in the history of aviation, in which 583 people were killed in the collision of two Boeing 747s on 27 March 1977. Graciosa Island or commonly La Graciosa is a volcanic island in the Canary Islands of Spain, located 2 km (1.2 mi) north of the island of Lanzarote across the Strait of El Río. It

2016-517: Is the oldest of the islands being more eroded. Its highest point is the Peak of the Bramble, at a height of 807 metres (2,648 feet). Its capital is Puerto del Rosario . Gran Canaria has 846,717 inhabitants. The capital, Las Palmas de Gran Canaria , with 377,203 inhabitants, is the most populous city and shares the status of capital of the Canaries with Santa Cruz de Tenerife. Gran Canaria's surface area

2100-712: Is the second largest in the archipelago and located 100 km (62 mi) from the African coast. The islands form the Macaronesia ecoregion with the Azores , Cape Verde , Madeira , and the Savage Isles . The Canary Islands is the largest and most populated archipelago of the Macaronesia region. The archipelago has seven large and several smaller islands, all of which are volcanic in origin. According to

2184-564: The Canary hotspot . The Canary Islands is the only place in Spain where volcanic eruptions have been recorded during the Modern Era , with some volcanoes still active (El Hierro, 2011). Volcanic islands such as those in the Canary chain often have steep ocean cliffs caused by catastrophic debris avalanches and landslides . The island chain's most recent eruption occurred at Cumbre Vieja ,

2268-560: The Civil Guard are based in the territory. Before the arrival of humans, the Canaries were inhabited by prehistoric animals including the giant lizard ( Gallotia goliath ), the Tenerife and Gran Canaria giant rats , and giant tortoises, Geochelone burchardi and Geochelone vulcanica . Although the original settlement of what are now called the Canary Islands is not entirely clear, linguistic, genetic, and archaeological analyses indicate that indigenous peoples were living on

2352-794: The Eocene Rum Complex of Scotland, the San Juan Mountains of Colorado (formed during the Oligocene , Miocene , and Pliocene epochs) or the Saint Francois Mountain Range of Missouri (erupted during the Proterozoic eon). For their 1968 paper that first introduced the concept of a resurgent caldera to geology, R.L. Smith and R.A. Bailey chose the Valles caldera as their model. Although

2436-689: The Phoenicians , the Greeks , and the Carthaginians . King Juba II , Caesar Augustus 's Numidian protégé, is credited with discovering the islands for the Western world. According to Pliny the Elder , Juba found the islands uninhabited, but found "a small temple of stone" and "some traces of buildings". Juba dispatched a naval contingent to re-open the dye production facility at Mogador in what

2520-625: The Roques de Anaga , Garachico and Fasnia in Tenerife, and Salmor and Bonanza in El Hierro. El Hierro, the westernmost island, covers 268.71 km (103.75 sq mi). It is the second smallest of the major islands, and the least populous with 10,798 inhabitants. The whole island was declared a Reserve of the Biosphere in 2000. Its capital is Valverde . Also known as Ferro, it was once

2604-541: The Spanish Senate . Of these, 11 seats are directly elected, 3 for Gran Canaria, 3 for Tenerife, and 1 each for Lanzarote (including La Graciosa), Fuerteventura, La Palma, La Gomera and El Hierro. The other 3 are appointed by the regional legislature. The Autonomous Community of the Canary Islands has two provinces ( provincias ), Las Palmas and Santa Cruz de Tenerife , whose capitals, Las Palmas de Gran Canaria and Santa Cruz de Tenerife , are capitals of

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2688-480: The dragon tree , Dracaena draco are endemic, as noted by Sabin Berthelot and Philip Barker Webb in their work, L'Histoire Naturelle des Îles Canaries (1835–50). The climate is warm subtropical / tropical and generally arid , moderated by the sea and in summer by the trade winds . There are a number of microclimates and the classifications range mainly from semi-desert to desert . The majority of

2772-559: The temperature inversion layer. As a result, the archipelago has two professional astronomical observatories: the Teide Observatory on Tenerife, and Roque de los Muchachos Observatory on La Palma. In 1927, the Province of Canary Islands was split into two provinces. In 1982, the autonomous community of the Canary Islands was established. The cities of Santa Cruz de Tenerife and Las Palmas de Gran Canaria are, jointly,

2856-721: The 14th century onward, numerous visits were made by sailors from Majorca , Portugal , and Genoa . Lancelotto Malocello settled on Lanzarote in 1312. The Majorcans established a mission with a bishop in the islands that lasted from 1350 to 1400. In 1402, the Castilian colonisation of the islands began with the expedition of the French explorers Jean de Béthencourt and Gadifer de la Salle , nobles and vassals of Henry III of Castile , to Lanzarote. From there, they went on to conquer Fuerteventura (1405) and El Hierro. These invasions were "brutal cultural and military clashes between

2940-400: The African coast, the influence of the current diminishes, and the islands become increasingly arid. Fuerteventura and Lanzarote , the islands which are closest to the African mainland, are effectively desert or semi-desert. Gran Canaria is known as a "continent in miniature" for its diverse landscapes like Maspalomas and Roque Nublo . The north of Tenerife lies under the influence of

3024-717: The Canaries , are a Spanish region, autonomous community and archipelago in the Atlantic Ocean . At their closest point to the African mainland, they are 100 kilometres (62 miles) west of Morocco . They are the southernmost of the autonomous communities of Spain . The islands have a population of 2.2 million people and are the most populous special territory of the European Union . The seven main islands are from largest to smallest in area, Tenerife , Fuerteventura , Gran Canaria , Lanzarote , La Palma , La Gomera , and El Hierro . The only other populated island

3108-481: The Canary Island's territorial waters as being Moroccan coast and Morocco has authorised gas and oil exploration in what the Canary Islands states to be Canarian territorial waters and Western Sahara waters. Morocco's official position is that international laws regarding territorial limits do not authorise Spain to claim seabed boundaries based on the territory of the Canaries, since the Canary Islands enjoy

3192-536: The Canary Islands are El Hierro , La Palma , La Gomera , Tenerife , Gran Canaria , Fuerteventura , Lanzarote , and La Graciosa . North of Lanzarote are the islets of Montaña Clara , Alegranza , Roque del Este and Roque del Oeste , belonging to the Chinijo Archipelago . Northeast of Fuerteventura is the islet of Lobos . There are a series of small adjacent rocks in the Canary Islands:

3276-561: The Canary Islands at least 2,000 years ago, possibly 3,000, and that they shared a common origin with the Berbers on the nearby North African coast. Reaching the islands may have taken place using several small boats, landing on the easternmost islands Lanzarote and Fuerteventura. These groups came to be known collectively as the Guanches , although Guanches had been the name for only the indigenous inhabitants of Tenerife. According to

3360-520: The Canary Islands have a hot desert climate ( BWh ) and a hot semi-desert climate ( BSh ) within the Köppen system, caused partly due to the cool Canary Current . A subtropical humid climate, which is very influenced by the ocean, is in the middle of the islands of La Gomera , Tenerife and La Palma , where laurisilva cloud forests grow. The seven major islands, one minor island, and several small islets were originally volcanic islands, formed by

3444-469: The Earth's volcanic activity (the other 40% is attributed to hotspot volcanism). Caldera structure is similar on all of these planetary bodies, though the size varies considerably. The average caldera diameter on Venus is 68 km (42 mi). The average caldera diameter on Io is close to 40 km (25 mi), and the mode is 6 km (3.7 mi); Tvashtar Paterae is likely the largest caldera with

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3528-514: The Moon have been well preserved through time and were once thought to have been the result of extreme volcanic activity, but are currently believed to have been formed by meteorites, nearly all of which took place in the first few hundred million years after the Moon formed. Around 500 million years afterward, the Moon's mantle was able to be extensively melted due to the decay of radioactive elements. Massive basaltic eruptions took place generally at

3612-726: The Solar System, Olympus Mons , which is more than three times the height of Mount Everest, with a diameter of 520 km (323 miles). The summit of the mountain has six nested calderas. Because there is no plate tectonics on Venus , heat is mainly lost by conduction through the lithosphere . This causes enormous lava flows, accounting for 80% of Venus' surface area. Many of the mountains are large shield volcanoes that range in size from 150–400 km (95–250 mi) in diameter and 2–4 km (1.2–2.5 mi) high. More than 80 of these large shield volcanoes have summit calderas averaging 60 km (37 mi) across. Io, unusually,

3696-631: The Teide National Park was declared one of the 12 Treasures of Spain . The regional executive body, the Parliament of the Canary Islands , is presided over by Fernando Clavijo Batlle ( Canarian Coalition ), the current President of the Canary Islands . The members of the regional legislature, the Parliament of the Canary Islands , has 70 elected legislators. The last regional election took place in May 2023. The islands have 14 seats in

3780-533: The Valles caldera is not unusually large, it is relatively young (1.25 million years old) and unusually well preserved, and it remains one of the best studied examples of a resurgent caldera. The ash flow tuffs of the Valles caldera, such as the Bandelier Tuff , were among the first to be thoroughly characterized. About 74,000 years ago, this Indonesian volcano released about 2,800 cubic kilometres (670 cu mi) dense-rock equivalent of ejecta. This

3864-471: The adjacent islets of the Chinijo Archipelago. The capital is Arrecife , with 56,834 inhabitants. The Chinijo Archipelago includes the islands La Graciosa , Alegranza , Montaña Clara , Roque del Este and Roque del Oeste . It has a surface of 40.8 km (15.8 sq mi), and only La Graciosa is populated, with 658 inhabitants. With 29 km (11 sq mi), La Graciosa is

3948-521: The autonomous community. Each of the seven major islands are ruled by an island council named a Cabildo Insular . Each island is subdivided into smaller municipalities ( municipios ). Las Palmas is divided into 34 municipalities , and Santa Cruz de Tenerife is divided into 54 municipalities . The international boundary of the Canaries is disputed in Morocco-Spain relations . In 2022 the UN declared

4032-411: The base of large impact craters. Also, eruptions may have taken place due to a magma reservoir at the base of the crust. This forms a dome, possibly the same morphology of a shield volcano where calderas universally are known to form. Although caldera-like structures are rare on the Moon, they are not completely absent. The Compton-Belkovich Volcanic Complex on the far side of the Moon is thought to be

4116-477: The bird Serinus canaria (canary) and the Phoenix canariensis palm. Four of Spain's thirteen national parks are located in the Canary Islands, more than any other autonomous community. Two of these have been declared UNESCO World Heritage Sites and the other two are part of Biosphere Reserves . The parks are: Teide National Park is the oldest and largest national park in the Canary Islands and one of

4200-587: The caldera atop Fernandina Island collapsed in 1968 when parts of the caldera floor dropped 350 metres (1,150 ft). Since the early 1960s, it has been known that volcanism has occurred on other planets and moons in the Solar System . Through the use of crewed and uncrewed spacecraft, volcanism has been discovered on Venus , Mars , the Moon , and Io , a satellite of Jupiter . None of these worlds have plate tectonics , which contributes approximately 60% of

4284-613: The caldera, forming hydrothermal ore deposits of metals such as lead, silver, gold, mercury, lithium, and uranium. One of the world's best-preserved mineralized calderas is the Sturgeon Lake Caldera in northwestern Ontario , Canada, which formed during the Neoarchean era about 2.7 billion years ago. In the San Juan volcanic field , ore veins were emplaced in fractures associated with several calderas, with

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4368-406: The capitals of the islands. Those cities are also, respectively, the capitals of the provinces of Santa Cruz de Tenerife and Las Palmas . Las Palmas de Gran Canaria has been the largest city in the Canaries since 1768, except for a brief period in the 1910s. Between the 1833 territorial division of Spain and 1927, Santa Cruz de Tenerife was the sole capital of the Canary Islands. In 1927, it

4452-412: The coast, 300 to 500 metres (1,000 to 1,600 ft) above sea level. These caves were sometimes isolated but more commonly formed settlements, with burial caves nearby'. Archaeological work has uncovered a rich culture visible through artefacts of ceramics , human figures, fishing, hunting and farming tools, plant fibre clothing and vessels, as well as cave paintings. At Lomo de los Gatos on Gran Canaria,

4536-438: The early 1930s, ornithologist Margaret Sordahl collected natural science specimens for the museum. Caldera A caldera ( / k ɔː l ˈ d ɛr ə , k æ l -/ kawl- DERR -ə, kal- ) is a large cauldron -like hollow that forms shortly after the emptying of a magma chamber in a volcanic eruption . An eruption that ejects large volumes of magma over a short period of time can cause significant detriment to

4620-581: The edge of the chamber. Ring fractures serve as feeders for fault intrusions which are also known as ring dikes . Secondary volcanic vents may form above the ring fracture. As the magma chamber empties, the center of the volcano within the ring fracture begins to collapse. The collapse may occur as the result of a single cataclysmic eruption, or it may occur in stages as the result of a series of eruptions. The total area that collapses may be hundreds of square kilometers. Some calderas are known to host rich ore deposits . Metal-rich fluids can circulate through

4704-565: The eruption column is unable to entrain enough air to remain buoyant, and the eruption column collapses into a tephra fountain that falls back to the surface to form pyroclastic flows . Eruptions of this type can spread ash over vast areas, so that ash flow tuffs emplaced by silicic caldera eruptions are the only volcanic product with volumes rivaling those of flood basalts . For example, when Yellowstone Caldera last erupted some 650,000 years ago, it released about 1,000 km of material (as measured in dense rock equivalent (DRE)), covering

4788-607: The fall is the principal source of water. Quiver trees grow extensively on the crater floor. Due to the absence of drinking water and mobile phone service and difficult road access, travel to Brukkaros is difficult. The Nama called the mountain Geitsi Gubib after the long, flowing loincloth worn by Khoikhoi women, known in Afrikaans as broek-en-karos ("trousers and kaross "), rendered in German to Brukkaros. Berseba

4872-589: The geological vocabulary by the German geologist Leopold von Buch when he published his memoirs of his 1815 visit to the Canary Islands , where he first saw the Las Cañadas caldera on Tenerife , with Mount Teide dominating the landscape, and then the Caldera de Taburiente on La Palma . A collapse is triggered by the emptying of the magma chamber beneath the volcano, sometimes as the result of

4956-430: The greatest mineralization taking place near the youngest and most silicic intrusions associated with each caldera. Explosive caldera eruptions are produced by a magma chamber whose magma is rich in silica . Silica-rich magma has a high viscosity , and therefore does not flow easily like basalt . The magma typically also contains a large amount of dissolved gases, up to 7 wt% for the most silica-rich magmas. When

5040-467: The human species was reduced to approximately 5,000–10,000 people. There is no direct evidence, however, that either theory is correct, and there is no evidence for any other animal decline or extinction, even in environmentally sensitive species. There is evidence that human habitation continued in India after the eruption. Some volcanoes, such as the large shield volcanoes Kīlauea and Mauna Loa on

5124-500: The indigenous population and the Castilians" lasting over a century due to formidable resistance by indigenous Canarians. Professor Mohamed Adhikari has defined the conquest of the islands as a genocide of the Guanches . Béthencourt received the title King of the Canary Islands, but still recognised King Henry III as his overlord. It was not a simple military enterprise, given the aboriginal resistance on some islands. Neither

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5208-452: The island erupted . It is the second-highest island of the Canaries, with the Roque de los Muchachos at 2,423 metres (7,949 feet) as its highest point. Santa Cruz de La Palma , known to those on the island as simply "Santa Cruz", is its capital. Tenerife is, with its area of 2,034 km (785 sq mi), the most extensive island of the Canary Islands. With 904,713 inhabitants, it is

5292-429: The island of Hawaii , form calderas in a different fashion. The magma feeding these volcanoes is basalt , which is silica poor. As a result, the magma is much less viscous than the magma of a rhyolitic volcano, and the magma chamber is drained by large lava flows rather than by explosive events. The resulting calderas are also known as subsidence calderas and can form more gradually than explosive calderas. For instance,

5376-424: The island of Lanzarote. It is the smallest and least populated of the main islands, with about 700 people. Tenerife is the largest and most populous island of the archipelago. Gran Canaria , with 865,070 inhabitants, is both the Canary Islands' second most populous island, and the third most populous one in Spain after Tenerife (966,354 inhabitants) and Majorca (896,038 inhabitants). The island of Fuerteventura

5460-424: The largest and most populous archipelago of Macaronesia . Because of their location, the Canary Islands have historically been considered a link between the four continents of Africa , North America , South America , and Europe . In 2023, the Canary Islands had a population of 2,236,013, with a density of 299 inhabitants per km , making it the seventh most populous autonomous community of Spain. The population

5544-408: The largest island of the Chinijo Archipelago and the smallest inhabited island of the Canaries. La Palma, with 81,863 inhabitants covering an area of 708.32 km (273.48 sq mi), is in its entirety a biosphere reserve. For long it showed no signs of volcanic activity, even though the volcano Teneguía entered into eruption last in 1971. On 19 September 2021, the volcanic Cumbre Vieja on

5628-401: The magma approaches the surface of the Earth, the drop in confining pressure causes the trapped gases to rapidly bubble out of the magma, fragmenting the magma to produce a mixture of volcanic ash and other tephra with the very hot gases. The mixture of ash and volcanic gases initially rises into the atmosphere as an eruption column . However, as the volume of erupted material increases,

5712-549: The majority of respondents from the Canary Islands (53.8%) considered themselves Spanish and Canarian in equal measures, followed by 24% who consider themselves more Canarian than Spanish. 6.1% of the respondents considered themselves only Canarian, and 7% considered themselves only Spanish. The defense of the territory is the responsibility of the Spanish Armed Forces . Components of the Army , Navy , Air Force and

5796-417: The moist Atlantic winds and is well vegetated. The south of the island around the tourist resorts of Playa de las Américas and Los Cristianos is arid. The island rises to almost 4,000 m (13,000 ft) above sea level. At altitude, in the cool relatively wet climate, forests of the endemic pine Pinus canariensis thrive. Many of the plant species in the Canary Islands, like the Canary Island pine and

5880-457: The most populated island of the archipelago and Spain. Two of the islands' principal cities are located on it: the capital, Santa Cruz de Tenerife and San Cristóbal de La Laguna , a World Heritage Site. San Cristóbal de La Laguna , the second city of the island, is home to the oldest university in the Canary Islands, the University of La Laguna . Teide , with its 3,715 metres (12,188 feet)

5964-519: The oldest in Spain. Located in the geographic centre of the island of Tenerife, it is the most visited national park in Spain. In 2010, it became the most visited national park in Europe and second worldwide. The park's highlight is the Teide volcano. Standing at an altitude of 3,715 metres (12,188 ft), it is the highest elevation in Spain and the third largest volcano on Earth from its base. In 2007,

6048-651: The opening of the Atlantic. Underwater magmatism began during the Cretaceous, and continued to the present day. The current islands reached the ocean's surface during the Miocene . The islands were once considered as a distinct physiographic section of the Atlas Mountains province, which is part of the larger African Alpine System division, but are now recognized as being related to a magmatic hot spot. In

6132-550: The position of the islands with respect to the north-east trade winds , the climate can be mild and wet or very dry. Several native species form laurisilva forests. The individual islands in the Canary archipelago tend to have distinct microclimates . Those islands such as El Hierro , La Palma and La Gomera lying to the west of the archipelago have a climate which is influenced by the moist Canary Current . They are well vegetated even at low levels and have extensive tracts of sub-tropical laurisilva forest. Travelling east toward

6216-588: The prevailing northeasterly trade winds . The name Islas Canarias is likely derived from the Latin name Canariae Insulae , meaning "Islands of the Dogs", perhaps because monk seals or sea dogs were abundant, a name that was evidently generalized from the ancient name of one of these islands, Canaria – presumably Gran Canaria. According to the historian Pliny the Elder , the island Canaria contained "vast multitudes of dogs of very large size". The connection to dogs

6300-410: The slope around a volcanic crater), and removal of the softer upper layers by erosion has created the central hollow. The hollow is drained by a stream which runs southwards through the ring mountain in a narrow valley. The route into the interior of the mountain is along this valley. At its head is a dry waterfall, over which the stream plunges down some 45 m after rain, and the river bed directly below

6384-416: The structural integrity of such a chamber, greatly diminishing its capacity to support its own roof, and any substrate or rock resting above. The ground surface then collapses into the emptied or partially emptied magma chamber, leaving a large depression at the surface (from one to dozens of kilometers in diameter). Although sometimes described as a crater , the feature is actually a type of sinkhole , as it

6468-463: The summer of 2011, a series of low-magnitude earthquakes occurred beneath El Hierro. These had a linear trend of northeast–southwest. In October a submarine eruption occurred about 2 km ( 1 + 1 ⁄ 4  mi) south of Restinga. This eruption produced gases and pumice, but no explosive activity was reported. The following table shows the highest mountains in each of the islands: The official natural symbols associated with Canary Islands are

6552-431: The westernmost known land in the world. Ancient European geographers such as Ptolemy recognised the island as the prime meridian of longitude. That remained so until the 19th century, when it was displaced by the one passing through Greenwich . Fuerteventura, with a surface of 1,660 km (640 sq mi), is the second largest island of the archipelago. It has been declared a biosphere reserve by UNESCO . It

6636-554: Was formed by the Canary hotspot. The island is part of the Chinijo Archipelago and the Chinijo Archipelago Natural Park (Parque Natural del Archipiélago Chinijo). It is administered by the municipality of Teguise. In 2018, La Graciosa was declared as the eighth Canary Island by the Spanish Senate , though it is not recognized as such by the Canarian administration. It is administratively dependent on

6720-720: Was founded nearby by the Rhenish Missionary , Samuel Hahn in 1850. A heliograph station operated under German administration. From 1926–1931, the National Geographic Society , in cooperation with the Smithsonian Institution , ran the Brukkaros Solar Observatory on the mountain to measure daily solar radiation . Arthur Bleksley worked there during the period. Whilst her husband ran the observatory in

6804-402: Was it politically, since the particular interests of the nobility (determined to strengthen their economic and political power through the acquisition of the islands) conflicted with those of the states, particularly Castile, which were in the midst of territorial expansion and in a process of strengthening of the crown against the nobility. Historians distinguish two periods in the conquest of

6888-611: Was ordered by decree that the capital of the Canary Islands would be shared between two cities, and this arrangement persists to the present day. The third largest city in the Canary Islands is San Cristóbal de La Laguna , another World Heritage Site on Tenerife. During the Age of Sail , the islands were the main stopover for Spanish galleons during the Spanish colonisation of the Americas , which sailed that far south in order to catch

6972-446: Was passed on via the female line. Social status and wealth were hereditary and determined the individual's position in the social pyramid, which consisted of the king, the relatives of the king, the lower nobility, villeins, plebeians, and finally executioners, butchers, embalmers, and prisoners". Their religion was animist , centring on the sun and moon, as well as natural features such as mountains. The islands may have been visited by

7056-464: Was the largest known eruption during the ongoing Quaternary period (the last 2.6 million years) and the largest known explosive eruption during the last 25 million years. In the late 1990s, anthropologist Stanley Ambrose proposed that a volcanic winter induced by this eruption reduced the human population to about 2,000–20,000 individuals, resulting in a population bottleneck . More recently, Lynn Jorde and Henry Harpending proposed that

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