Visitors at the national park in Montana were left horrified after a tourist wandered off the designated boardwalk and ...

Photos of the incident show the man casually walking across the park's delicate protected bacterial mats to collect fallen ...

"The brain-eating amoeba would starve on that guy." Visitor sparks backlash after drinking thermal water straight from ...

"Do people think Yellowstone is a zoo?" Video captures tourists pressing their luck with massive wild animal at Yellowstone ...