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Mikura-jima volcanoMikura-jima volcano (御蔵島, Mikurajima) forms a small steep-sided island between Miyake-jima and Hachijo-jima volcanoes in the Izu Islands of Japan. The sparsely populated island is surrounded by 500 m high cliffs on the S and E side.
Mikura-jima volcano contains of a stratovolcano and lava domes on the SE side. Flank vents form some small small sea stacks offshore, including a prominent 73 m high pinnacle off the SE tip of the island.
The last activity of Mikurajima was about 6000 years ago and produced ash fall and pyroclastic flows, and ended with the formation of a lava dome.