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Cascades Volcano Observatory

Find U.S. Volcano

The U.S. Geological Survey's Cascades Volcano Observatory strives to serve the national interest by helping people to live knowledgeably and safely with volcanoes in Washington, Oregon, and Idaho. 



Media Advisory: Busting Myths About One of the Largest Volcanic Systems in the World - Live Online Public Lecture


New Scanning DOAS Installed at Mount St. Helens


Media Advisory: Mount St. Helens Revisited - Live Online Public Lecture