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Yellowstone National ParkA bull elk grasses on fall grass.
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Yellowstone National Park
U is for Uinta Ground Squirrels
The uinta ground squirrel pops out of its hole to check its surroundings.

 

 

These ground squirrels hibernate for most of their lives. They spend most of the year sleeping in their underground homes and only come out for a few months in the summer. 

 

 
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 10, 2007 at 16:31 EST