Mount St. Helens

Mount St. Helens

Details

Age
Less than 40,000 years old
Topo
USGS Mount St. Helens
Type
Stratovolcano
Range
Cascade Range
Listing
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Location
Location in Washington state
Etymology
Alleyne FitzHerbert, 1st Baron St Helens
Formed By
Subduction zone volcanism
Elevation Ft
8363
First Ascent
1853 by Thomas J. Dryer
Volcanic Arc
Cascade Volcanic Arc
Easiest Route
Hike via south slope of volcano (closest area near eruption site)
Last Eruption
2004–2008
Prominence Ft
4605
Label Position
right