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Making America's Best Idea Even Better
Yellowstone National ParkA herd of Bison, commonly called Buffalo, graze along a roadside.
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Yellowstone National Park
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Repairs By O'B John O'Brien P.O. Box 1202 West Yellowstone MT 59758 (406)646-9084
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: August 07, 2006 at 18:33 EST