• Visitors stand on the boardwalk of Grand Prismatic, the park's largest hot spring which is ringed with orange, brown and yellow runoff channels.

    Yellowstone

    National Park ID,MT,WY

History of Concession Development

History of Concession Development in YNP
 
By Mary Shivers Culpin
National Park Service, Yellowstone Center for Resources
Yellowstone National Park, Wyoming
YCR-CR-2003-01, 2003
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Did You Know?

Bison in Yellowstone.

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.