When Mount St. Helens erupted on May 18, 1980, the landscape changed in an instant—the geologic version of an instant, anyway. It was the deadliest eruption the United States had ever seen, leveling ...
It was the deadliest volcanic eruption in U.S. history, and its reverberations are still being felt today. Thirty-seven years ago, Mount St. Helens exploded, killing 57 people, leveling more than 250 ...
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