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Yellowstone National ParkRoosevelt Arch is at the park's North Entrance
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Yellowstone National Park
Yellowstone Geology
Summer Crowd at Old Faithful.  

Did You Know?
At peak summer levels, 3,500 employees work for Yellowstone National Park concessioners and about 800 work for the park.

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Last Updated: July 25, 2006 at 12:22 EST