Yellowstone, Grand Teton and the Great Smoky Mountains have shut their gates to the public. Park officials said a crush of visitors moving through the trails was beginning to run afoul of social ...

Other changes might be looming, and that includes Great Smoky Mountains National Park, with more firing set to take place. Here's the very latest, and other news on Grand Teton's "uncertain" birthday.

A mountain trail at the Grand Teton National Park was shut down after a man was attacked by two grizzly bears in a surprise encounter. The Signal Mountain Summit Road and Signal Mountain Trail at ...

A unique alpine panorama in the heart of Grand Teton National Park Created in 1929, Grand Teton National Park, in Wyoming, ...

A picture window inside the main lodge provides an unmatched view of the Tetons, a range famously lauded by Theodore Roosevelt as 'the first mountains ... the Grand Teton National Park Foundation ...