yellowstone national park protects a large area of northern wyoming that is actually a volcanic caldera and the sweeping valleys are the result of violent volcanic eruptions eons ago | Dave Welling Nature Photography

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798600003a the firehole river flows over firehole falls during a snowy winter morning in yellowstone national park wyoming

THIS IMAGE IS CONTAINED IN THE FOLLOWING GALLERIES:
Landscapes: U.S. national parks G-Z, Landscapes: winter scenics