Tao-Rusyr Caldera
| Tao-Rusyr Caldera | |
|---|---|
Onekotan Island, with Nemo Peak at top (north) and Tao-Rusyr Caldera at bottom. | |
| Highest point | |
| Elevation | 1,325 m (4,347 ft) |
| Prominence | 1,325 m (4,347 ft) |
| Listing | Ribu |
| Coordinates | 49°21′N 154°42′E / 49.35°N 154.70°E |
| Geography | |
| Geology | |
| Mountain type | Stratovolcano / Caldera |
| Last eruption | November 1952 |
Tao-Rusyr Caldera (Russian: Тао-Русыр) is a stratovolcano located at the southern end of Onekotan Island, Kuril Islands, Russia. It has 7.5 km wide caldera formed during a catastrophic eruption less than 10,000 years ago (reported ages range from 5,550 to 9,400 Before Present). The waters of Kol'tsevoe Lake (Russian: Кольцевое озеро, Ring Lake) fill the caldera, along with a large symmetrical andesitic cone, Krenitsyn Peak (Russian: Креницын; Japanese 黒石山; Kuroishiyama), that rises as an island within the lake. This volcano was named after Captain Pyotr Krenitsyn of the Imperial Russian Navy.