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It was on March 20, 1980, when people began noticing volcanic activity at St. Helens Mountain in Washington. By March 27, a series of small tremors would culminate in the most disastrous volcanic eruption in U.S. history.
Learn more about your ad choices. Visit megaphone.fm/adchoices
By Evergreen Podcasts4.9
4040 ratings
It was on March 20, 1980, when people began noticing volcanic activity at St. Helens Mountain in Washington. By March 27, a series of small tremors would culminate in the most disastrous volcanic eruption in U.S. history.
Learn more about your ad choices. Visit megaphone.fm/adchoices

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