It's been nearly four years since a massive volcanic explosion rocked the Pacific nation of Tonga. The eruption created a ...
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Scientists Can’t Explain This Perfectly Round Crater in Alaska—And It’s Been a Mystery for Decades
Deep in Alaska’s Katmai National Park, a perfectly round, 1,600-foot-wide crater has puzzled scientists for decades. Known as Savonoski Crater, this enormous hole appears as though it was carved into ...
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