A man is missing in Colorado, and he was last seen in Rocky Mountain National Park. The park is asking for help finding Blake Kieckhafer.

One man did his best to warn some Yellowstone tourists who should have been getting back in their cars as a bison moved toward them.

It will be free to enter any U.S. National Park one day next week. To help spread the word about the free-entry day, NPS posted a funny video.

Two hikers in Glacier National Park came across a grizzly-bear family on the trail. Watch what happens here.

Yellowstone National Park announced an incident in which a teen became severely burned at a thermal area. Learn more.

A woman was enjoying a popular trail in Yosemite National Park when a large tree branch fell and crushed the hiker.

Two hikers in Zion National Park found themselves in a frightening situation thanks to a sudden rainstorm and flash flood.

On Sunday, a mountain lion attacked a 4-year-old child at Olympic National Park in Washington. Get the story here.

Colorado’s Black Canyon of the Gunnison National Park is ablaze thanks to a wildfire on each side of the canyon.

Officials at Yellowstone National Park made the difficult decision to “lethally remove” a black bear. Here’s why.