Steam pours from vigorous fumaroles near the summit of Volcán Ollagüe. This massive 5868-m-high stratovolcano is capped by a large dacitic lava dome. Collapse of the volcano produced a massive Pleistocene debris-avalanche deposit that extends to the west. Active sulfur mines on the upper western and southern flanks are reached by a road that climbs to about 5500 m elevation. Only increased fumarolic activity has been recorded at Ollagüe during historical time.

Photo by Oscar González-Ferrán (University of Chile).

This image is made available under the Creative Commons BY-NC 4.0 license terms.

Ollagüe