This July 14, 1912 photo courtesy of the U.S. Geological Survey shows ash from Novarupta's 1912 eruption covering the graveyard and church at Kaguyak (once Douglas) village in Alaska. Photograph taken... more 
This July 14, 1912 photo courtesy of the U.S. Geological Survey shows ash from Novarupta's 1912 eruption covering the graveyard and church at Kaguyak (once Douglas) village in Alaska. Photograph taken slightly more than a month after the ashfall. A century after one of the world's largest volcanic eruptions, ash and pumice are still plentiful in Alaska's Valley of Ten Thousand Smokes. The three-day explosion that began June 6, 1912, spewed ash 100,000 feet above the state's Katmai region, covering the valley to depths up to 700 feet. (AP Photo/U.S. Geological Survey, G.C. Martin) less 
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Associated Press | Photo By U.S. Geological Survey, G.C. Martin
Sat, Jun 2, 2012 1:11 PM EDT