Mount St. Helens - Wikipedia
Mount St. Helens (known as Lawetlat'la to the local Cowlitz people, and Loowit or Louwala-Clough to the Klickitat) is an active stratovolcano located in Skamania County, Washington, [1] …
Mount St. Helens National Volcanic Monument - US Forest Service
Discover the wonder of winter around Mount St. Helens, where many cross-country ski and snowmobile trails are available. Each year thousands of climbers make the journey to the …
Mount Saint Helens | Location, Eruption, Map, & Facts | Britannica
Nov 26, 2025 · Mount Saint Helens, volcanic peak in the Cascade Range, southwestern Washington, U.S. Its eruption on May 18, 1980, was one of the greatest volcanic explosions …
Mount St. Helens | U.S. Geological Survey - USGS.gov
Mount St. Helens is primarily an explosive dacite volcano with a complex magmatic system. The volcano was formed during four eruptive stages beginning about 275,000 years ago and has …
How to Visit Mount St. Helens: 9 Things To Do
Jan 6, 2026 · Explore Mount St. Helens with hiking trails, viewpoints, visitor center tips, and essential advice for planning a safe and memorable trip.
Explore Mount St. Helens | Mount St. Helens Institute
Explore Mount St. Helens! Find current conditions, guided trips, hikes, climbing info, and learn about its geology and ecology. Plan your visit by season or location.
Mount St. Helens Fact Sheet | Volcano World
Mount St. Helens Fact Sheet (Copied by permission from publication of Mount St. Helens National Volcanic Monument and Gifford Pinchot National Forest. Activity and Chronology are through …
Mount St. Helens - HISTORY
Mar 9, 2018 · Mount St. Helens is a volcano located in southwestern Washington state. It’s the most active volcano in the Cascade Range, a mountain range that extends from British …
Mount St. Helens - Facts and Figures
Notable Statistic: The May 18, 1980 blast devastated 596 square kilometers (229 square miles) and destroyed timber valued at several million dollars. This was the deadliest and most …
Mount St. Helens 40th Anniversary — The 1980 Eruption
Forty years ago, on May 18th, 1980, Mount St. Helens produced the largest observed eruption in the coterminus United States. This eruption had profound impacts on human life and the …