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What has happened at Mount St. Helens since the catastrophic May 18, 1980 eruption? A new USGS fact sheet discusses eruptive activity, volcano monitoring efforts, and the reasons why Cascade Range volcanoes erupt. Six videos are available for download, which help to tell the tale of what's been going on at Mount St. Helens from 1980 to now. Photo by Jim Moore from April 6, 1980 steam-blast eruption. 
#mountsthelens   #volcanoes   #usgs   #science    #volcanohazardsprogram   #volcanomonitoring  
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