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  1. Mount St. Helens (known as Lawetlat'la to the indigenous Cowlitz people, and Loowit or Louwala-Clough to the Klickitat) is an active stratovolcano located in Skamania County, Washington, [1] in the Pacific Northwest region of the United States.

  2. May 10, 2024 · 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 ever recorded in North America. A total of 57 people and thousands of animals were killed in the event.

  3. Oct 30, 2023 · 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 been the most active volcano in the Cascade Range during the Holocene.

  4. 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 Columbia through...

  5. A vast, gray landscape lay where once the forested slopes of Mount St. Helens grew. In 1982 the President and Congress created the 110,000-acre National Volcanic Monument for research, recreation, and education. Inside the Monument, the environment is left to respond naturally to the disturbance.

  6. May 18, 2020 · Four decades after Mount St. Helenseruption, scientists finally are unearthing some clues to its curious position. In one of the most comprehensive efforts to trace a volcano’s roots, the...

  7. Sitting about 97 miles south of Seattle and 52 miles northeast of Portland, Oregon, Mount St. Helens is the most active volcano within the Cascade Range and has the highest probability out of all U.S. volcanoes other than Hawaii and Alaska to erupt in the future.

  8. Nov 9, 2023 · Mount St. Helens, located in Washington State, is the most active volcano in the Cascade Range, and it is the most likely of the contiguous U.S. volcanoes to erupt in the future.

  9. May 18, 2020 · Over the past 4,000 years, Mount St. Helens has been the most prolific volcano in the Cascades, erupting in a dizzying array of styles, from ear splitting explosions to rivers of lava. But by...

  10. May 20, 2010 · Mount St. Helens Pictures: Before and After the Blast From snow-capped peak to smoldering crater, see how the major eruption 30 years ago today changed the face of the famous volcano. May 20, 2010