Posts Tagged ‘valleys’

The 7 Wonders of Mount St. Helens

In March of 1980, magma began moving up into the mountain wedging it apart.  A powerful earthquake at 8:32 a.m., on May 18, caused the north slope to plunge into the valleys below, releasing the pressure within with a lateral, northward, fan-shaped explosion.  This initial eight minute blast destroyed 230 square miles of forest.
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