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A Tour of U.S. National Parks

5 of 11
yellowstone

Yellowstone National Park


Yellowstone is America's first national park. It spans 2,219,791 acres of land in Wyoming, Montana, and Idaho. Yellowstone was established in 1872 to preserve a wide range of wildlife, including grizzly bears, wolves, bison, and elk, and to protect a collection of extraordinary geysers and hot springs, such as Old Faithful and Mammoth Hot Springs. Before the National Park Service was established, the U.S. Army was in charge of its protection; troops built Fort Yellowstone at Mammoth Hot Springs to monitor the land from 1886 to 1918.

Fun Fact: There were no wolves in Yellowstone in 1994. They were reintroduced to the park in 1995, and by the end of 2007, there were over 170 wolves in Yellowstone.

Photo source: Carol M. Highsmith

Next: Glacier National Park

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