YELLOWSTONE NATIONAL PARK –On Saturday afternoon, four men ran out onto the Grand Prismatic Spring in Yellowstone National Park.

Buckrail reports that a Wyoming resident, who asked to remain anonymous, took several photos and a video of the men who walked off the boardwalk and onto the Grand Prismatic Spring.

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It is prohibited to ignore the signs in Yellowstone National Park and go beyond the boardwalk.

The Yellowstone National Park website provides the following description of Grand Prismatic Spring:

Grand Prismatic Spring located in Midway Geyser Basin, has the distinction of being the park’s largest hot spring.

It measures approximately 370 feet (112.8 m) in diameter and is over 121 feet (37 m) deep.

A description of this spring by fur trapper Osborne Russell in 1839 also makes it the earliest described thermal feature in Yellowstone that is definitely identifiable.

Feature Photos taken by Jackson resident who asked to remain anonymous. Pitchengine Communities