Under the bubbling hot springs and geysers of Yellowstone National Park is a supervolcano Most people don t know it s there The caldera is so large that it can only be seen from a plane or satellite It just could be overdue for an eruption, which would change the landscape and climate of our planet.For Alex, being left alone for the weekend means having the freedom to p Under the bubbling hot springs and geysers of Yellowstone National Park is a supervolcano Most people don t know it s...
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