Mount St. Helens in southeast Washington erupted on May 18, 1980. The volcano and 110,000 acres of surrounding land are now part of the Mount St. Helens National Volcanic Monument.
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Mount St. Helens in southeast Washington erupted on May 18, 1980. The volcano and 110,000 acres of surrounding land are now part of the Mount St. Helens National Volcanic Monument.
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