Cuernos del Diablo volcano is a partially glacially eroded basaltic stratovolcano in southern Chile. The volcano has been frequently active in the Holocene (within the past 11,700 years) and produced flank cones and erupted basaltic lava flows. Most eruptions took place from vents on the SW flank and from the summit to the NW base of the volcano.
There are no historically recorded eruptions, but it is possible that the volcano has been active in the past centuries.
Fumaroles were observed on a flank cone in 1931.
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