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Yellowstone National ParkA bull elk grasses on fall grass.
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Yellowstone National Park
Trip Planners to Specific Park Areas
Opal Terrace and Spring

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Bison in Yellowstone.  

Did You Know?
There are more people hurt by bison than by bears each year in Yellowstone. Park regulations state that visitors must stay at least 25 yards away from bison or elk and 100 yards away from bears.

Last Updated: June 16, 2009 at 12:08 EST