Image:Mudline from 1980 St Helens lahars next to Muddy River.jpg
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Mudline_from_1980_St_Helens_lahars_next_to_Muddy_River.jpg (61KB, MIME type: image/jpeg)
Nearly 135 miles (220 kilometers) of river channels surrounding the volcano were affected by the lahars of May 18. 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. (October 23,1980, by Lyn Topinka, USGS/CVO)
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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