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On May 18, 1980, a powerful magnitude 5.1 earthquake shook the depths beneath Mo…

On May 18, 1980, a powerful magnitude 5.1 earthquake shook the depths beneath Mount St. Helens in Washington, triggering the largest landslide ever recorded. The mountain’s north face collapsed in a breathtaking instant, unleashing a supersonic blast of ash, hot gas, and rock that flattened 230 square miles of forest in seconds. The eruption sent […]

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