Sperry Glacier perimeter: 1966,1998, 2005, 2015.

By Northern Rocky Mountain Science Center 2017 (approx.)

This image shows the perimeter of Sperry Glacier in Glacier National Park in 1966,1998, 2005, and 2015.

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Detailed Description

This image shows the perimeter of Sperry Glacier in Glacier National Park in 1966,1998, 2005, and 2015.

Sources/Usage

Public Domain.