Cordillera Occidental desde el aíre - Bolivia - Chile

This is a list of lists of active and extinct volcanoes sorted by country. There are separate lists of Antarctic, submarine, and extraterrestrial volcanoes.

The country of Bolivia hosts numerous active and extinct volcanoes across its territory. The active volcanoes are located in western Bolivia making up the Cordillera Occidetal, the western limit of the Altiplano plateau. Many of the active volcanoes are international mountains shared with Chile. All Cenozoic volcanoes of Bolivia are part of the Central Volcanic Zone (CVZ) of the Andean Volcanic Belt that results due to processes involved in the subduction of Nazca Plate under the South American Plate. The Central Volcanic Zone is a major upper Cenozoic volcanic province. Apart from Andean volcanoes the geology of Bolivia host the remants of ancient volcanoes around the Precambrian Guaporé Shield in the eastern part of the country.

A volcano is an opening, or rupture, in a planet's surface or crust, which allows hot magma, volcanic ash and gases to escape from below the surface.

Volcanoes are generally found where tectonic plates are diverging or converging. A mid-oceanic ridge, for example the Mid-Atlantic Ridge, has examples of volcanoes caused by divergent tectonic plates pulling apart; the Pacific Ring of Fire has examples of volcanoes caused by convergent tectonic plates coming together. By contrast, volcanoes are usually not created where two tectonic plates slide past one another. Volcanoes can also form where there is stretching and thinning of the Earth's crust in the interiors of plates, e.g., in the East African Rift, the Wells Gray-Clearwater volcanic field and the Rio Grande Rift in North America. This type of volcanism falls under the umbrella of "Plate hypothesis" volcanism. Volcanism away from plate boundaries has also been explained as mantle plumes. These so-called "hotspots", for example Hawaii, are postulated to arise from upwelling diapirs with magma from the core-mantle boundary, 3,000 km deep in the Earth.

Parinacota is a massive potentially active stratovolcano on the border of Chile and Bolivia. It is part of the Nevados de Payachata volcanic group. The other major edifice in that group is the Pleistocene peak of Pomerape. Parinacota's last eruptive phase has been dated using the helium surface exposure technique, which ties the eruption to 290AD ± 300 years.

One of the most dramatic eruptive events in the volcano's past was 8,000 years ago, when a major collapse of the edifice produced a 6 km³ debris avalanche, which blocked nearby drainage patterns, creating Chungará Lake.

The volcano and Pomerape straddle the border between Sajama National Park (Bolivia) and Lauca National Park (Chile).

Nevado Sajama is an extinct stratovolcano and the highest peak in Bolivia. The mountain is located in the Oruro Department, Sajama Province, Curahuara de Carangas Municipality, Sajama Canton. It is situated in the Sajama National Park in the southwest area of the country some 16–24 km (10-15 mi) from the border with Chile. The peak is an isolated cone, but is geologically complex, with lava domes of andesitic and rhyodactic composition overlain by an andesitic stratovolcano. The date of the most recent eruption is uncertain, although Holocene activity is assigned to the volcano by many. The treeline of Polylepis tarapacana on the volcano is as high as 5200m above sea level, one of the highest altitudes trees can be found growing anywhere in the world.

Joseph Prem made the first attempt to climb the mountain in 1927 by the northwest ridge but was stopped short at 6,200 m. After several more attempts, Prem along with Wilfrid Kuehm reached the top in August 1939 by a more difficult southeast ridge.

From the village of Sajama an acclimatised team can climb the mountain in two or three days if weather conditions are favorable. Currently the easiest of the routes is the SW ridge. This route is technically easy, require some minimal mountaineering equipment and does not present any particular difficulty except some snow slopes up to 45 degrees.

Bolivia (ⁱ/bəˈlɪviə/, Spanish: [boˈliβja]) officially known as Plurinational State of Bolivia (Spanish: Estado Plurinacional de Bolivia, Quechua: Bulivya Mamallaqta, Aymara: Wuliwya Suyu), is a landlocked country in central South America. It is bordered by Brazil to the north and east, Paraguay and Argentina to the south, Chile to the southwest, and Peru to the west.

The Andes is the world's longest continental mountain range. It is a continual range of highlands along the western coast of South America. This range is about 7,000 km (4,300 mi) long, about 200 km (120 mi) to 700 km (430 mi) wide (widest between 18 degrees South and 20 degrees South latitude), and of an average height of about 4,000 m (13,000 ft).

Along its length, the Andes is split into several ranges, which are separated by intermediate depressions. The Andes is the location of several high plateaux – some of which host major cities such as Quito, Bogotá, Arequipa, Medellín, Sucre, and La Paz.

The so-called Altiplano plateau is the world's second-highest plateau following the Tibetan plateau. The Andes extend from north to south through seven South American countries; Argentina, Bolivia, Chile, Colombia, Ecuador, Peru and Venezuela.

The Andes range is the world's highest mountain range outside of the continent of Asia. The highest peak, Mt. Aconcagua, rises to an elevation of about 6,962 m (22,841 ft) above sea level. The peak of Chimborazo in the Ecuadorean Andes is farther from the centre of the Earth than any other location on the Earth's surface. This is because of the equatorial bulge that results from the Earth's rotation. The world's highest volcanoes are in the Andes, including Ojos del Salado on the Chile-Argentina frontier which rises to 6,893 m (22,615 ft), and over 50 other volcanoes that rise above 6,000 m.

Volcán Acotango - 6,052 metres (19,856 ft) is the central and highest of a group of stratovolcanoes straddling the border of Bolivia and Chile. The group is known as Nevados de Quimsachata and consists, apart of Acotango, of Volcán Humarata - 5,730 metres (18,799 ft) to its north and Cerro Capurata - 5,990 metres (19,652 ft) on its south. The group lies along a north-south alignment. The Acotango volcano is heavily eroded, but a lava flow on its northern flank is morphologically young, suggesting Acotango was active in the Holocene.