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Yellowstone National Park Stunning views of Minerva Terrace are located at Mammoth Hot Springs.
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Yellowstone National Park
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The Roosevelt Arch
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Upper Geyser Basin Hydrothermal Features on a Winter Day.

Did You Know?
Yellowstone contains approximately one-half of the world’s hydrothermal features. There are over 10,000 hydrothermal features, including over 300 geysers, in the park.

Last Updated: March 10, 2011 at 12:04 MST