Image:Mudline from 1980 St Helens lahars next to Muddy River.jpg

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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)

USGS image from

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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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  • (del) (cur) 02:08, 23 May 2004 . . Maveric149 ( Talk | contribs) . . 543×353 (61,655 bytes) ( USGS image from [http://vulcan.wr.usgs.gov/Volcanoes/MSH/SlideSet/ljt_slideset_old.html]<br><br>{{msg:PD}})

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