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The Andes (/ˈændiːz/ AN-deez), Andes Mountains or Andean Mountain Range (Spanish: Cordillera de los Andes; Quechua: Anti) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is 8,900 km (5,530 mi) long and 200 to 700 km (124 to 435 mi) wide (widest between 18°S and 20°S latitude) and has an average height of about 4,000 m (13,123 ft). The Andes extend from South to North through seven South American countries.: Argentina, Chile, Bolivia, Peru, Ecuador, Colombia and western Venezuela.
Along their length, the Andes are split into several ranges, separated by intermediate depressions. The Andes are the location of several high plateaus—some of which host major cities such as Quito, Bogotá, Cali, Arequipa, Medellín, Bucaramanga, Sucre, Mérida, El Alto and La Paz. The Altiplano Plateau is the world's second-highest after the Tibetan Plateau. These ranges are in turn grouped into three major divisions based on climate: the Tropical Andes, the Dry Andes, and the Wet Andes. (Full article...)
Selected general articles
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Image 1
Acamarachi (also known as Pili) is a 6,046-metre (19,836 ft) high volcano in northern Chile. In this part of Chile, it is the highest volcano. Its name means "black moon". It is a volcano in the Central Volcanic Zone of the Andes, a zone of strong volcanic activity during the last million years. Old volcanoes in the area are well-preserved, due to the dry climate.
Acamarachi itself is a cone-shaped volcano with steep upper flanks and a lava dome on its northern side. While there is no indication of historical activity and the flank lava flows are old, some lava flows around the summit crater and a lava coulee north of Acamarachi on the saddle between Acamarachi and Colachi volcano may be postglacial in age. Acamarachi is formed by andesitic and dacitic rocks. (Full article...) -
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Ancohuma or Janq'u Uma (Aymara janq'u white, uma water, "white water", also spelled Janq'uma, other spellings, Jankho Uma, Jankhouma) is the third highest mountain in Bolivia (after Sajama and Illimani). It is located in the northern section of the Cordillera Real, part of the Andes, east of Lake Titicaca. It lies just south of the slightly lower Illampu, near the town of Sorata.
Despite being higher than Illampu, Ancohuma is a gentler peak, with less local relief, and it is a somewhat easier climb. The peak was first climbed in 1919, by Rudolf Dienst and Adolf Schulze. Their route, still the easiest, climbs the southwest face, and is rated PD (not very difficult). Other routes exist on the northwest ridge and the west face. Depending on the route desired, the mountain is approached either from the west or from the northeast; each approach requires two to three days from Sorata. (Full article...) -
Image 3
Hudson Volcano (Spanish: Volcán Hudson, Spanish: Cerro Hudson, Monte Hudson) is a volcano in the rugged mountains of southern Chile. Lying in the Southern Volcanic Zone of the Andes, it was formed by the subduction of the oceanic Nazca Plate under the continental South American Plate. The Nazca Plate ends there at the Chile Triple Junction; south of Hudson is a smaller volcano, followed by a long gap without active volcanoes that separates the Southern Volcanic Zone from the Austral Volcanic Zone. Hudson has the form of a 10-kilometre-wide (6-mile) volcanic caldera filled with ice. The Huemules Glacier emerges from the northwestern side of the caldera. The volcano has erupted rocks ranging from basalt to rhyolite, but large parts of the caldera are formed by non-volcanic rocks.
The volcano erupted numerous times in the late Pleistocene and Holocene, forming widespread tephra deposits both in the proximity of Hudson and in the wider region, and is the most active volcano in the region. The last eruption was in 2011. (Full article...) -
Image 4
Huaytapallana (possibly from in the Quechua spelling Waytapallana; wayta wild flower, a little bunch of flowers, pallay to collect, pallana an instrument to collect fruit / collectable, Waytapallana "a place where you collect wild flowers",) or Lasuntay is the highest peak in the Huaytapallana mountain range in the Andes of Peru. Its summit reaches about 5,557 m (18,232 ft) above sea level. The mountain is situated in the Junín Region, Huancayo Province, in the districts of Huancayo and Pariahuanca. (Full article...) -
Image 5
Puracé is an andesitic stratovolcano located in the Puracé National Natural Park in the Cauca Department, Colombia. It is part of the North Volcanic Zone of the Andean Volcanic Belt. The volcano is located at the intersection of the Coconucos and Morras Faults.
It is one of the most active volcanoes in Colombia. Large explosive eruptions occurred in 1849, 1869, 1885, 1949, 1950, 1956, and 1957. There were about a dozen eruptions in the 20th century, the most recent being in 1977. On this occasion, volcanic ash was deposited 7 kilometres (4.3 mi) away. Fumaroles were seen near the summit in 1990, and hot springs emerged from some of the lower slopes. (Full article...) -
Image 6Wayna Potosí (Aymara and Quechua wayna young, Hispanicized spelling Huayna Potosí) is a mountain in the Andes of Bolivia, about 4,969 metres (16,302 ft) high. It is located in the Oruro Department, Sajama Province, Turku Municipality, Turku Canton, northwest of Turku (Turco). The Turku River originates near the mountain. It is a left tributary of the Lauca River. (Full article...)
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Image 7
Licancabur (Spanish pronunciation: [likaŋkaˈβuɾ]) is a stratovolcano on the border between Bolivia and Chile, south of the Sairecabur volcano and west of Juriques. Part of the Andean Central Volcanic Zone, it has a prominent, 5,916-metre (19,409 ft)-high cone. A 400–500-metre (1,300–1,600 ft) summit crater containing Licancabur Lake, a crater lake which is among the highest lakes in the world, caps the volcano. There are no glaciers owing to the arid climate. Numerous animal species and plants live on the mountain.
Licancabur formed atop of Pleistocene ignimbrites and has been active during the Holocene, after the ice ages. Three stages of lava flows emanate from the edifice and have a young appearance. Although no historic eruptions of the volcano are known, lava flows extending into Laguna Verde have been dated to 13,240 ± 100 BP and there may be residual heat in the mountain. The volcano has primarily erupted andesite, with small amounts of dacite and basaltic andesite. (Full article...) -
Image 8
The Laguna de Sonso Nature Reserve is located in the Valle del Cauca Department of Colombia. It contains the last extensive remnant of original natural wetland remaining in the Cauca River Valley in western Colombia, and was declared a nature reserve in October 1978. It comprises a series of marshes and lagoons on the east bank of the Cauca River, between the municipalities of Buga, Yotoco and Guacari. It has an area of 2,045 ha (7.90 sq mi), lying at an altitude of 935 m (3,068 ft). The wetlands are affected by the introduced water hyacinth. The reserve has been designated as a protected Ramsar site since 2017. (Full article...) -
Image 9
Monte Pissis is an extinct volcano on the border of the La Rioja and Catamarca provinces in Argentina, 25 km (16 mi) to the east of the Chilean border and about 550 km (340 mi) north of Aconcagua. The mountain is the third-highest in the Western Hemisphere.
Monte Pissis is named after Pedro José Amadeo Pissis, a French geologist who worked for the Chilean government.
Due to its location in the Atacama Desert, the mountain has very dry conditions but features an extensive glacier, with crevasses, which is unique in the region. (Full article...) -
Image 10
Huandoy (probably from Quechua wantuy, to transfer, to transpose, to carry, to carry a heavy load) or Tullparaju (possibly from Quechua tullpa rustic cooking-fire, stove, rahu snow, ice, mountain with snow) is a mountain located inside Huascarán National Park in Ancash, Peru. It is the second-tallest peak of the Cordillera Blanca section of the Andes, after Huascarán. These two peaks are rather nearby, separated only by the Llanganuco glacial valley (which contains the Llanganuco Lakes) at 3,846 m asl.
It is a snow-capped mountain with four peaks arranged in the form of a fireplace, the tallest of which is 6,395 m. The four peaks are each over 6,000 m, and are:- Huandoy (6,395 m)
- Huandoy-West (6,356 m)
- Huandoy-South (6,160 m)
- Huandoy-East (6,000 m)
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Image 11
Tungurahua (/tʊŋɡʊˈrɑːwə/; from Quichua tunguri (throat) and rahua (fire), "Throat of Fire") is an active stratovolcano located in the Cordillera Oriental of Ecuador. The volcano gives its name to the province of Tungurahua. Volcanic activity restarted on August 19, 1999, and is ongoing , with several eruptive episodes since then, the most recent lasting from February 26 to March 16, 2016. (Full article...) -
Image 12
Tupungato, one of the highest mountains in the Americas, is a massive Andean lava dome dating to Pleistocene times. It lies on the Argentina–Chile border, between the Chilean Metropolitan Region (near a major international highway about 80 km (50 mi) east of Santiago) and the Argentine province of Mendoza, about 100 km (62 mi) south of Aconcagua, the highest peak of both the Southern and Western hemispheres. Immediately to its southwest is the active Tupungatito volcano (literally, little Tupungato), which last erupted in 1987.
Tupungato Department, an important Argentine wine-producing region in Mendoza province, is named for the volcano. Recent Chilean mapping indicates it has a height of 6635m. (Full article...) -
Image 13
Jirishanca is a 6,094-metre-high (19,993 ft) mountain in the Huayhuash mountain range in west central Peru, part of the Andes. Other sources cite a height of 6,125 metres (20,095 ft). It is the tenth highest peak in Peru and the third in the Huayhuash range (after Yerupajá and Siula Grande). Jirishanca translates as "hummingbird bill peak". (Full article...) -
Image 14
Lake Junin (IPA: [xuˈnin]; Spanish Lago Junín, named after the nearby town of Junin) or Chinchaycocha (possibly from Quechua chincha, chinchay north, northern, chinchay ocelot, qucha lake, lagoon, "northern lake" or "ocelot lake") is the largest lake entirely within Peruvian territory. Even though Lake Titicaca has a much larger area, its eastern half is located on Bolivian territory. Lake Junin is an important birdwatching destination in the country. (Full article...) -
Image 15
Lake Mitococha or Mitucocha (possibly from Quechua mit'u, mitu mud, qucha lake, "mud lake") is a lake in Peru located in Huanuco Region, Lauricocha Province, Queropalca District. It has an elevation of 4,270 metres (14,009 ft) above sea level. It lies on the east side of the Huayhuash mountain range, northeast of Mituraju and Rondoy. Lake Mitococha is 0.83 km long and 0.3 km at its widest point. (Full article...) -
Image 16
The Titicaca orestias, Lake Titicaca orestias, or Lake Titicaca flat-headed fish (Orestias cuvieri), also known by its native name amanto, is a likely extinct freshwater killifish from Lake Titicaca in South America. It belongs in the pupfish genus Orestias, endemic to lakes, rivers and streams in the Andean highlands. With a total length of up to 27 cm (10.6 in), it was the largest member in that genus. In the hope that an undiscovered population remains, it is listed as Data Deficient by the IUCN. Despite its common name, it is not the only Orestias from Lake Titicaca.
Its mouth was nearly turned upwards, thereby giving the flat head a concave shape. The head took up nearly a third of the whole body length. The upperside was greenish-yellow to umber. The lower jaw was black. Its scales were oddly light coloured at their centre. The scales of the young were blotched. (Full article...) -
Image 17
Lake Carhuacocha (possibly from Quechua qarwa leaf worm, larva of a beetle; pale, yellowish, golden, qucha lake,) is a lake in Peru located in the Huanuco Region, Lauricocha Province, on the border of the districts of Jesús and Queropalca. It lies on the east side of the Huayhuash mountain range. The lake is about 1.5 km long and 0.44 km at its widest point. (Full article...) -
Image 18
Incahuasi (Spanish pronunciation: [iŋkaˈwasi]; possibly from Quechua: inka Inca, wasi house) is a volcanic mountain in the Andes of South America. It lies on the border of the Catamarca Province of Argentina and the Atacama Region of Chile. Incahuasi has a summit elevation of 6,621 metres (21,722 ft) above sea level.
The volcano consists of a 3.5-kilometre-wide (2.2 mi) caldera and two stratovolcanoes. Four pyroclastic cones located 7 kilometres (4.3 mi) to the northeast have produced basalt-andesite lava flows that cover an area of 10 square kilometres (4 sq mi). (Full article...) -
Image 19
Nevado Tres Cruces is a massif of volcanic origin in the Andes Mountains on the border of Argentina and Chile. It has two main summits, Tres Cruces Sur at 6,748 metres (22,139 ft) and Tres Cruces Centro at 6,629 m (21,749 ft) and a third minor summit, Tres Cruces Norte 6,030 m (19,780 ft). Tres Cruces Sur is the sixth highest mountain in the Andes.
The volcano has an extended history of activity, going back at least 1.5 million years. A number of lava domes surround the complex and a number of craters lie on its summits. The main volcano is of rhyodacitic composition and has generated two major ignimbritic eruptions, one 1.5 million years ago and a second 67,000 years ago. The last eruption was 28,000 years ago, but the volcano is a candidate source for a Holocene eruption and could erupt again in the future. (Full article...) -
Image 20
Lastarria is a 5,697 metres (18,691 ft) high stratovolcano that lies on the border between Chile and Argentina. It is remote, and the surroundings are uninhabited but can be reached through an unpaved road. The volcano is part of the Central Volcanic Zone, one of the four segments of the volcanic arc of the Andes. Over a thousand volcanoes—of which about 50 are active—lie in this over 1,500 kilometres (930 mi) long chain of volcanoes, which is generated by subduction of the Nazca Plate beneath the South American Plate.
The volcano is constituted by two volcanic edifices that form a ridge, and one subsidiary lava flow field southwest of the main volcanoes. The main edifice features several aligned craters that form a line. There is no recorded eruptive activity, but the volcano displays vigorous fumarolic activity on its northern side and within the craters. It is located on top of older volcanic rocks and features both andesite and dacite. (Full article...) -
Image 21Illimani is a mountain in the Khari Khari mountain range of the Bolivian Andes, about 5,030 m (16,503 ft) high. It is situated south-east of Potosí in the Potosí Department, Tomás Frías Province, Potosí Municipality. Illimani lies south-west of the mountain Uma Jalanta, north-east of Challwiri Lake and north of Illimani Lake. (Full article...)
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Image 22
The Nevado del Tolima is a Late Pleistocene to recently active andesitic stratovolcano located in the Tolima department, Colombia. The volcano lies south of Nevado del Ruiz volcano and is situated within the Los Nevados National Natural Park. The volcano, whose most recent activity dates to 1943 and last major eruption around 3600 years ago, overlies the Eocene El Bosque Batholith, dated at 49.1 ± 1.7 Ma. (Full article...) -
Image 23Misti is a dormant volcano located in the Andes mountains in southern Peru, rising above Peru's second-largest city, Arequipa. It is a conical volcano with two nested summit craters, the inner one of which contains a volcanic plug or lava dome with active fumaroles. The summit of the volcano lies on the margin of the outer crater and is 5,822 metres (19,101 ft) above sea level. Snow falls on the summit during the wet season, but does not persist; there are no glaciers. The upper slopes of the volcano are barren, while the lower slopes are covered by bushland.
The volcano developed over four different stages. During each stage, lava flows and lava domes built up a mountain, whose summit then collapsed to form a caldera. The volcano is part of a volcano group with Chachani to the northwest and Pichu Pichu to the southeast, and developed on top of a basement formed by numerous Miocene-Pliocene ignimbrites and volcano-derived debris. Numerous intense explosive eruptions took place during the last 50,000 years and covered the surrounding terrain with tephra. The last two significant eruptions were 2,000 years ago and in 1440–1470 AD; since then, phases of increased fumarolic activity have sometimes been mistaken for eruptions. (Full article...) -
Image 24
The Puracé National Natural Park (Spanish: Parque Nacional Natural Puracé) is a national park located in the Andean region of Colombia, southeast of the city of Popayán in the Cordillera Central range. Its main feature is the active stratovolcano Puracé, one of Colombia's most active volcanoes. Four of the country's most important rivers originate within the area: Magdalena River, Cauca River, Japurá River and Patía River. (Full article...) -
Image 25
Chumpe (possibly from chumpi Jaqaru for corn with yellow seeds and Quechua for belt; or ch'umpi Jaqaru for red and Quechua for brown), is a mountain in the north of the Pariacaca mountain range in the Andes of Peru, about 5,200 metres (17,060 ft) high. It is situated in the Junín Region, Yauli Province, in the districts of Huay-Huay and Yauli District. Chumpe lies east of Lake Pumacocha. The mining town of San Cristóbal is situated at its feet. (Full article...)
Did you know...
- ... that the 1930s Polish Andean expeditions have been credited with several first ascents and the tracing of a new route to the summit of Aconcagua, the Andes' highest peak?
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Selected images
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Image 7Pico Humboldt at sunset (from Andes)
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Image 10Irrigating land in the Peruvian Andes (from Andes)
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Image 11Bolivian Andes (from Andes)
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Image 13Aerial view of Valle Carbajal in the Tierra del Fuego. The Andes range is about 200 km (124 mi) wide throughout its length, except in the Bolivian flexure where it is about 640 kilometres (398 mi) wide. (from Andes)
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Image 16A male Andean cock-of-the-rock, a species found in humid Andean forests and the national bird of Peru (from Andes)
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Image 19Central Andes (from Andes)
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Image 20Peruvian farmers sowing maize and beans (from Andes)
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