The horseshoe-shaped crater of Mount St. Helens is visible in this aerial view of the Washington state volcano. During the May 18, 1980 eruption, the north face of the volcano collapsed. Since then, new lava domes have formed in the crater and are visible here. Mount St. Helens now stands 8,363 feet (2,549 meters), losing about 13 percent of its summit in the 1980 eruption. It is the most active volcano in the Cascade Range during the Holocene epoch (past 10,000 years).
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