Sacabaya (also known as Tambo Quemado) is a

pyroclastic shield In volcanology, a pyroclastic shield or ignimbrite shield is an uncommon type of shield volcano. Unlike most shield volcanoes, pyroclastic shields are formed mostly of pyroclastic and highly explosive eruptions rather than relatively fluid basalti ...

Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, yellow, and green from top to bottom) with the coat of arms of Bolivia in the center , flag_alt2 = 7 × 7 square p ...

. It is located on the Altiplano near to the

Rio Lauca The Lauca River is a binational river. It originates in the Chilean Altiplano of the Arica and Parinacota Region, crosses the Andes and empties into Coipasa Lake in Bolivia. The upper reach of the river lies within the boundaries of Lauca Nati ...

. The volcano is composed of ignimbrite, which has formed a shield. The shield is capped by an area of vents which has many overlapping craters, and is elongated in shape. At the southern end lies the youngest of the craters which has a

lava dome In volcanology, a lava dome is a circular mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano. Dome-building eruptions are common, particularly in convergent plate boundary settings. Around 6% of eruptions on ...

within it. Sacabaya has a diameter of and rises to the summit; the edifice is covered by material produced during explosive activity. The summit contains a north-south row of several pit craters, each with a diameter of about , and one of which contains a

. Material from the volcano has been transported away by wind. The volcano may be of Holocene age and is presently fumarolically active (GVP).

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* Pyroclastic shields Subduction volcanoes Volcanoes of Oruro Department {{Oruro-geo-stub

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