Aerial view, looking south, of Bogoslof Island, which is the summit of a largely submarine stratovolcano located in the Bering Sea 50 km (31 mi) behind the main Aleutian volcanic arc. The island is about 1.5x 0.6 km (1 x 0.4 mi) and, due to energetic wave action and frequent eruptive activity, it has changed shape dramatically since first mapped in the late 1700's. Its most recent eruption, in 1992, produced the conical, rubbly lava dome (150 m [492 ft] high)and offshore spire at bottom center. Photograph by T. Keith, U.S. Geological Survey, May 10, 1994.
Image courtesy of AVO / U.S. Geological Survey.
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