6,000 years ago the Mount Mazama volcano exploded, scattering 290 trillion pounds of rock. The five-mile-wide caldera filled with water and formed the deepest lake in the United States. Inimitable landform illustrator Tau Rho Alpha (seriously, his daughter’s named Theta) drew this south-up view to compare Crater Lake to the crater formed by Mt. St. Helens, which he considered pisher stuff. “As spectacular and devastating as the 1980 eruption of Mount St. Helens was, it was a minor event compared to the cataclysmic destruction of Mount Mazama.”
100% cotton. Wash in cold water, gentle cycle, line dry. Illustration by Tau Rho Alpha, U.S. Geological Survey.
Crater Lake, OR • 42.942, -122.102
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