Results for Mount St. Helens - You Are Edge of the Blast Zone
Results for Mount St. Helens - You Are Edge of the Blast Zone
Mount St. Helens - You Are Edge of the Blast Zone
The eruption of Mount St. Helens on May 18, 1980 triggered a huge landslide causing a powerful, laterally directed blast. A pyroclastic flow consisting of rock fragments, highly charged gas and super heated steam, devastated almost 150,000 acres of private, ...
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