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Yellowstone National ParkFishing Bridge over Yellowstone River
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Yellowstone National Park
Winter 2007-2008 Road Use Map
Road Map for 2007-2008 Winter Use
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: October 25, 2007 at 12:20 EST