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Yellowstone National Park Breathtaking vistas offer easy access to views of Yellowstone Lake.
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Yellowstone National Park
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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.
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Last Updated: July 20, 2007 at 10:37 MST