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Mount St. Helens National Volcanic Monument

By Geology and Ecology of National Parks

Find out how USGS is monitoring Mt. St. Helens today

Cascades Observatory

Mount St. Helens National Volcanic Monument was established following the 1980 eruption and is maintained by the U.S. Forest Service. 

Geology of Mount St. Helens National Volcanic Monument

Toutle River badlands
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Park Map of Mount St. Helens Natoinal Volcanic Monument

Mount St. Helens National Volcanic Monument Map
Sources/Usage: Public Domain.
This is a map featuring the basic geology of Mount St. Helens National Volcanic Monument.