BackgroundMuch of the cone is surrounded by lava flows no older than 200 years. Historical eruptions have been vulcanian or vulcanian-strombolian with moderate explosive activity and occasional lava flows from the summit crater.
The cone has been constructed during the past 2000 years within a 5-km-wide caldera that formed about 9,000 year ago within a complex system of overlapping calderas. The caldera cuts the south side of the older Dvor volcano and is located outside the north margin of a large, still older caldera (the mid-Pleistocene Polovinka caldera), which contains the smaller Akademia Nauk and Odnoboky calderas.
Most seismicity preceding Karymsky eruptions originated beneath Akademia Nauk caldera, which is located immediately south of Karymsky volcano.
Source: GVP, Smithsonian Institution
Karymsky Volcano glowing at dusk. (Photo: mlyvers)
The summit cone of Karymsky with parts of the Karymsky caldera walls behind. (Photo: Tom Pfeiffer)
On our request, the helicopter pilots agree to fly a round over Karymsky's steep and deep crater. (Photo: Tom Pfeiffer)
The active caldera lake of Akademia Nauk volcano southeast of Karymsky seen from the helicopter. (Photo: Tom Pfeiffer)
Karymsky volcano tours:Kamchatka - Land of Colors (volcano expedition to Kamchatka)
See also: Sentinel hub | Landsat 8 | NASA FIRMS