Onekotan volcanic island seen from space - Onekotan volcanic island seen from space - Onekotan...

Onekotan volcanic island seen from space - Onekotan volcanic island seen from space - Onekotan Island is an uninhabited volcanic island north of the Kuril Islands chain (Russia). About 40 kilometres long, this island is home to two stratovolcanoes, on the right (north), the Nemo volcano, on the left (south), the Krenitsyn volcano with the caldera Tao - Rusyr. Image obtained from the International Space Station (ISS) on January 9, 2011. Snow cover highlights the calderas and volcanic cones that form the northern and southern ends of Onekotan Island, part of the Russian Federation in the western Pacific Ocean. Calderas are depressions formed when a volcano empties its magma chamber in an explosive eruption and then the overlaying material collapses into the evacuated space. In this astronaut photograph taken from the International Space Station (ISS) on January 9, 2011, the northern end of the island (image right) is dominated by the Nemo Peak volcano, which began forming within an older caldera approximately 9,500 years ago. The last recorded eruption at Nemo Peak occurred in the early 18th century. The southern end of the island was formed by the 7.5 kilometer (4.6 mile) wide Tao - Rusyr Caldera. The caldera is filled by Kal'tsevoe Lake and Krenitzyn Peak, a volcano that has only erupted once in recorded history (in 1952). Extending between northeastern Japan and the Kamchatka Peninsula of Russian, the Kurils are an island arc located along the Pacific Ring of Fire.””