Image:St Helens July 22, 1980 eruption.jpg

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Five more explosive eruptions of Mount St. Helens occurred during 1980, including this spectacular event of July 22. This eruption sent pumice and ash 6 to 11 miles (10-18 kilometers) into the air, and was visible in Seattle, Washington, 100 miles (160 kilometers) to the north. The view here is from the south. (July 22, 1980, by Michael P. Doukas, USGS)

USGS image from [1]

Public Domain

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.

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