In June 1912, the eruption of Novarupta Volcano altered the Katmai area dramatically. Severe earthquakes rocked the area for a week before Novarupta exploded with cataclysmic force. Enormous quantities of hot, glowing pumice and ash were ejected from Novarupta and nearby fissures. This material flowed over the terrain, destroying all life in its path. Trees up slope were snapped off and carbonized by the blasts of hot wind and gas. For several days ash, pumice, and gas were ejected and a haze darkened the sky over most of the Northern Hemisphere. When it was over, more than 40 square miles of lush green land lay buried beneath volcanic deposits as much as 700 feet deep. . Acid rain caused clothes to disintegrate on clotheslines in distant Vancouver, Canada. The eruption was 10 times more forceful than the 1980 eruption of Mount St. Helens.,Exploration of the the volcano's aftermathby the National Geographic Society in 1916, established this National Monument .
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