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The 1980 Mount St Helens eruption wasn't the first time. In 1964, action of the Pacific tectonic plate created the largest recorded earthquake in U.S. history. If you're traveling to Alaska this summer, you want to hear this podcast first.
The 1980 Mount St Helens eruption wasn't the first time. In 1964, action of the Pacific tectonic plate created the largest recorded earthquake in U.S. history. If you're traveling to Alaska this summer, you want to hear this podcast first.