File:Valdez Glacier.jpg

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Valdez Glacier in the Chugach Mountains, Alaska. Over the past century, this glacier has thinned 90 meters and the unvegetated areas along the glacial margins have been exposed by the thinning and retreating glacier during the last 2 decades of the 20th century. [1]

Source: http://www.usgs.gov/features/glaciers2.html.

Photograph by Bruce F. Molnia.

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.