Yellowstone: Top Photos

The caldera that powers half the world's geysers

A view of the Grand Prismatic Hot Spring from the vantage point of the Grand Prismatic Overlook Trail in Yellowstone National Park, Wyoming. Grand Prismatic Spring is the largest hot spring in the Uni
A view of the Grand Prismatic Hot Spring from the vantage point of the Grand Prismatic Overlook Trail in Yellowstone National Park, Wyoming. Grand Prismatic Spring is the largest hot spring in the… © USGS Communications and Publishing, Public domain, via Wikimedia Commons

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