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Eruption of Mount Saint Helens, May 18, 1980 |
The May 18, 1980, eruption of Mount Saint Helens was the most destructive in the history of the United States. Mount Saint Helens is located in southwest Washington in the Cascade Range, a mountain range dominated by periodically active volcanic peaks. In addition to photos taken on May 18, 1980, this slide set includes images of pre-eruption activity and post-eruption effects such as the blast area, mud flows, ash fall, and altered terrain. |