Bolshaya Ipelka and Opala Volcanoes on the Kamchatka Peninsula, Russia – October 17th, 200952.5N 157.3E
The massive shield volcano in the lower left quadrant of this orthorectified image, is the early Pleistocene Bolshaya Ipelka shield volcano. Although extensively eroded by glaciers, it is the largest volcanic structure of southern Kamchatka.
It has a large volcanic caldera surrounded by a ring-shaped ridge with steep inner walls and rocky outer slopes. A single unnamed Holocene cinder cone is found on the southern flank of Bolshaya Ipelka.
The conical stratovolcano to the east (right) is Opala, located on the same east-west tectonic line. Opala was constructed along the northern rim of a large 12 x 14 km wide caldera.