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On Lewis and Clark's trip, a man name John Colter left the expedition and saw the area of what is now Yellowstone National park. He came back with stories of steaming geysers and bubbling cauldrons. they now call that story "Colter's Hell."
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it was established when Ulysses S. Grant was president.
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yellowstone national park has its first wagon trip
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U.S. Army takes over protective duties for Yellowstone and its wildlife
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fort yellowstone is in the mamath hot spring, which is in the northwestern park of yellowstone. this date is when the first building was done. there was also other buildings such as a guard house and headquarters.
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Yellowstone is opened to automobile traffic
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U.S. Congress authorizes the National Park Service
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First request to park managers to plow roads in winter
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First personal snowmobiles enter the park
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in 1988 yellowstone was hit with a fire
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12 wolves were brought to yellowstone from canada
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Harsh winter leads to more than 1,000 bison dying or being killed
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Park completes 2007 winter-use plan
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3,394,326 is the amount of visitors in yellowstone that year
