Krenitsyna Volcano
The peak of Krenitsyna Volcano rises as an island within an island in Russia's Far East. It is located on Onekotan Island in the northwest Pacific Ocean and surrounded by Kol'tsevoye Lake, a 4.6-mile-wide (7.5-km) caldera lake. Onekotan is part of the Kuril Islands, a volcanic archipelago and segment of the “Ring of Fire” — a path of tectonic activity that circles the Pacific Ocean.
49.350000°, 154.700000°