"Wake up, people!" Video shows national parkgoers risking their lives in dangerous photo op: 'This is infuriating' first ...

The first reports of Yellowstone, in the early 1800s, described a place in the northwest corner of the Wyoming Territory where mud boiled, water spouted, and steam came out of the ground.

According to Yellowstone National Park, more than 20 people have been killed in accidents with some of the park's 10,000 geysers, hot springs, steam vents and geothermal pools.

Yellowstone National Park has a new thermal vent spewing steam in the air that could be visible to tourists once visitors ...

Gliding past a pair of adventure seekers with cross country skis on their feet and trekking poles in their hands at 35 miles per hour on a 900-cc Ski-Doo, it quickly becomes clear that the best ...