A helicopter on the floor of the inner caldera of Karkar volcano with the 300-m-high caldera wall behind it. The wall was stripped of vegetation by a powerful phreatic explosion on 8 March, revealing the stratigraphy of lighter-colored lava flows and darker pyroclastic deposits that form the edifice. This location is covered by ash and blocks from the March 8 explosion that occurred one month earlier.

Photo by William Melson, 1979 (Smithsonian Institution)

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Galleries: Volcanic Outcrops | Calderas

Keywords: outcrop | stratigraphy | caldera | geology | deposit

Karkar