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Summary

Description
English: (copied description from USGS site): Nearly 135 miles (220 kilometers) of river channels surrounding the volcano [Mt. St. Helens] were affected by the lahars of May 18, 1980. A mudline left behind on trees shows depths reached by the mud. A scientist (middle right) gives scale. This view is along the Muddy River, southeast of Mount St. Helens.
Date Taken on 23 October 1980
Source http://vulcan.wr.usgs.gov/Glossary/Lahars/description_lahars.html
Author Lyn Topinka, USGS

Licensing

Public domain
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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23 October 1980

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Date/TimeThumbnailDimensionsUserComment
current 03:35, 12 December 2022 Thumbnail for version as of 03:35, 12 December 20222,904 × 1,947 (2.64 MB)Hike395less jpeg compression, re-crop from original
02:32, 10 October 2011 Thumbnail for version as of 02:32, 10 October 20112,916 × 1,948 (1.21 MB)Materialscientistcrop frame
15:02, 2 September 2010 Thumbnail for version as of 15:02, 2 September 20103,072 × 2,048 (4.07 MB)Awickert{{Information |Description={{en|1=(copied description from USGS site): Nearly 135 miles (220 kilometers) of river channels surrounding the volcano [Mt. St. Helens] were affected by the lahars of May 18, 1980. A mudline left behind on trees shows depths re
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