Photographs of Biscuit and Black Sand Basins, Upper Geyser Basin, Yellowstone National Park
Wyoming > Yellowstone National Park > The Southwest > Upper Geyser Basin > Photographs
Keywords: Yellowstone National Park, Biscuit and Black Sand Basins, Upper Geyser Basin, Wyoming, thermal features, geyser basins, trees, grassland, steam, springs, hot pools, water
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