Mount St Helens is an active volcano in the Cascade Range of southwestern Washington. Famous for its catastrophic 1980 eruption, it offers world-class hikes, visitor centers, and dramatic geological features.

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Geography

ContinentNorth America
RegionPacific Northwest
SubregionPacific Northwest
CountryUnited States
StateWashington
CountySkamania County and Skamania County
TimezoneAmericaLos Angeles
Latitude46.2
Longitude-122.19
Maps
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Mount St Helens is an active stratovolcano located in the Cascade Range in southwestern Washington State. It erupted catastrophically on 18 May 1980, dramatically transforming its profile and creating a large crater. Today, the mountain and surrounding Mount St Helens National Volcanic Monument showcase raw geological power, with gleaming subsurface glaciers, lakes in the blast zone, and active geothermal areas. Visitors come to hike on well-maintained trails, learn at multiple visitor centers, and view the mountain from safe distances. The primary routes include the moderate-friendly Hummocks Trail and the more strenuous Monitor Ridge, which offers near-vent views. Beyond the summit area, the monument protects a landscape recovering from eruption—serrated volcanic domes, ash-covered plains, and forest regrowth—making it a compelling destination for geology, wildlife, and outdoor recreation.

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