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Image 13283
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Okmok Caldera as viewed from an Alaska Airlines jet in early June, 2007. Okmok caldera is a nearly circular, 500- to 800-m-deep, 8- to 10-km-diameter collapse crater that truncates an older volcanic edifice. The current caldera formed about 2000 years ago. Since then, numerous eruptions from vents on the floor of the caldera have produced a variety of cones, craters, lava flows, and other volcanic features. As of October, 2009, Okmok last erupted in 2008 and is one of the most active volcanoes in the Aleutians.

Date: June 7, 2007 12:00 AM
Volcano(es):Okmok
Photographer/Creator: Read, Cyrus

Citation Information:
Image courtesy of AVO/USGS.
Please cite the photographer and the Alaska Volcano Observatory / U.S. Geological Survey when using this image.

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Page modified: June 18, 2013 15:00
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