An aerial view of the Koryaksky summit shows a NW-flank fumarole that has remained active since a 1956-57 eruption. Explosive activity took place from the summit crater (forming the notch to the upper-right) and a radial fissure that extended from 3,100 to 3,000 m elevation on the upper NW flank. The eruption began in December 1956 and reached its peak in late January, when the strongest explosions occurred.

Photo by Oleg Volynets (Institute of Volcanology, Petropavlovsk).

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

Keywords: stratovolcano | fumarole | emissions | plume | gas plume | steam | volcanic gas

Koryaksky