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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. It lies 52 miles (83 km) northeast of Portland, Oregon, [2] and 98 miles (158 km) south of Seattle. [3] .
Learn about the history, geology, and ecology of Mount St. Helens, the active volcano that erupted in 1980 and created a 110,000-acre National Monument. Find out how to visit, recreate, and explore this unique landscape and its wildlife.
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. Watch the volcanic eruption of Mount Saint Helens and subsequent flooding caused by melted glaciers.
- The Editors of Encyclopaedia Britannica
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...
- Mount St. Helens
Learn about the history, activity, and hazards of Mount St. Helens, the most active volcano in the Cascade Range. Find maps, news, publications, and data on the volcano's eruptions, earthquakes, gas emissions, and more.
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.
Nov 9, 2023 · Learn about the 275,000-year history of Mount St. Helens, the most active volcano in the Cascade Range and the most likely to erupt in the U.S. See maps, photos, and scientific data of its eruptive stages, magma evolution, and hazards.
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