The elongated NNW-trending edifice of 5697-m-high Lastarria volcano rises above pyroclastic-flow deposits that form an extensive apron below the northern flanks of the volcano. Five nested craters are found along a semi-arcuate line on the summit ridge. The youngest feature is a lava dome that overlaps the northern crater rim. Persistent fumarolic activity occurs at the summit and NW flank, and small sulfur flows 350 m long have been produced by melting of extensive sulfur deposits in the summit region.

Photo by Paula Cornejo, courtesy of Oscar González-Ferrán (University of Chile).

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

Lastarria