A Yellowstone National Park visitor was recently spotted walking in flip-flops across an off-limits zone. Photos of the ...

The man has been slammed online after he was seen walking in flip-flops over a delicate eco-system in Yellowstone National ...

Other Yellowstone visitors were horrified Monday as they watched a man in flip-flops walking off the board walk onto the ...

A bison died after it appeared to stumble into a popular hot spring, where temperatures reach 192 degrees Fahrenheit, while tourists watched on at Yellowstone National Park1.

Over 20 people have died after they entered or accidentally fell into the hot springs at Yellowstone National Park. There are signs everywhere that warn visitors not to get off the boardwalks or ...

"I wish Congress would make the fines in national parks much larger." Onlooker captures upsetting video of tourist's ...

Members of Montana’s congressional delegation have introduced bicameral legislation implementing a presidential order that ...

Travel & Outdoors Yellowstone tourists under fire for walking out onto Grand Prismatic Spring Updated: May. 17, 2016, 5:18 p.m. | Published: May. 17, 2016, 4:18 p.m.

The color given off by Grand Prismatic’s bacteria is a pigment that they use as sunscreen. By the time the water gets to the edge of the spring, it has cooled to about 147 degrees.

At 250-by-300 feet and up to 160 feet deep, the Grand Prismatic Spring is the largest hot spring in the USA. Its brilliant colors are the result of pigmented bacteria living on its perimeter.

The immediate task, though, is to find the drone in 150 feet of 160-degree water. Said Nash of the Grand Prismatic spring: "It's a deep one." ...