This February 1982 photo of the Poás active crater shows a gas plume rising from fumaroles on the southern crater rim. The northern crater wall in the background exposes pyroclastic deposits from phreatomagmatic and phreatic eruptions.

Photo by National Aeronautical and Space Administration (NASA), 1982.

This image is made available as a Public Domain Work, but proper attribution is appreciated.

Keywords: crater | plume | emissions | crater lake | stratigraphy | deposit | gas

Poás