Discover more about Mount St. Helens eruptive past in this much more stark, higher-elevation setting. Access Lava Canyon Trail #184 [http://www.fs.usda.gov/recarea/mountsthelens/recarea/?recid=41610] at this site. Travel along the trail and explore a mudflow-scoured canyon with views of a waterfall plunging over an ancient lava flow. Cont...
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