Image:OkmokCaldera.jpg
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Aerial view looking north of Okmok caldera, a 9.3-km- diameter (5.8 mi) circular crater that truncates the top of a large shield volcano on the northeastern part of Umnak Island in the eastern Aleutian Islands.
Photograph by J. Reeder. Alaska Division of Geological and Geophysical Surveys, date unknown. Source: http://geopubs.wr.usgs.gov/dds/dds-40/
This image is a work of a United States Geological Survey employee, taken or made during the course of the person's official duties. As a work of the United States Government, the image is in the public domain. For more information, see the USGS copyright policy.
Aerial view looking north of Okmok caldera, a 9.3-km- diameter (5.8 mi) circular crater that truncates the top of a large shield volcano on the northeastern part of Umnak Island in the eastern Aleutian Islands.
Photograph by J. Reeder. Alaska Division of Geological and Geophysical Surveys, date unknown. Source: http://geopubs.wr.usgs.gov/dds/dds-40/
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This image is in the public domain because it contains materials that originally came from the United States Geological Survey, an agency of the United States Department of Interior. For more information, see the official USGS copyright policy |
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