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St. Helens

The shear headwall of the landslide scarp created by collapse of Mount St. Helens on May 18, 1980, towers 550 m above the crater floor. The white areas on the crater rim are glaciers that were truncated by the collapse. Steam rises at the right from the new crater of St. Helens in this August 1980 view. Mount Hood is visible in the distance to the south across the Columbia River.

Type/Process: Volcanic Landslide
Volcanic Status: Historical
Image Number: 029-004
Photographer: Lee Siebert, 1980 (Smithsonian Institution)
Summit Elevation: 2549 meters
Latitude/Longitude: 46.20 N / 122.18 W
Timeframe: Last known eruption 1964 or later
Region: Canada and Western USA

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Smithsonian National Museum of Natural History Department of Mineral Sciences website Credits