An ash plume erupts from the summit of Klyuchevskoy on 16 February 1987. Long-term activity includes both explosive and effusive activity from summit and flank vents. This view from the south shows Bezymianny producing a small plume at the lower left, Kamen at the left center, and the broader Ushkovsky on the left horizon.

Photo by Alexander Belousov, 1987 (Institute of Volcanology, Petropavlovsk).

Keywords: eruption | ash | ash plume | explosive eruption | stratovolcano

Kamen

Ushkovsky

Klyuchevskoy

Bezymianny