Unmak Island (IMAGE)

Desert Research Institute

Unmak Island

Caption

Alaska's Umnak Island in the Aleutians showing the huge, 10-km wide caldera (upper right) largely created by the 43 BCE Okmok II eruption at the dawn of the Roman Empire. Landsat-8 Operational Land Imager image from May 3, 2014.

Credit

U.S. Geological Survey

Usage Restrictions

This image is under embargo until June 22, 2020 at 3:00 PM U.S. Eastern time. The image may only be used with appropriate caption or credit.

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