The bison died in the boiling waters of the Grand Prismatic Spring. This happens from time to time, but usually not in front of a crowd.

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The Grand Prismatic hot spring in Yellowstone National Park is sourced from a magma chamber beneath it. The bright colours ...

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.

The incident occurred at Grand Prismatic Spring near Old Faithful as tourists were enjoying a close-up view of the famous and popular hot spring.

NPS / Curtis Akin Big picture view: Grand Prismatic Spring is Yellowstone ’s largest hot spring. By the numbers: It is 200–330 feet in diameter and more than 121 feet deep.

NPS / Curtis Akin Big picture view: Grand Prismatic Spring is Yellowstone ’s largest hot spring. By the numbers: It is 200–330 feet in diameter and more than 121 feet deep.

NPS / Curtis Akin Big picture view: Grand Prismatic Spring is Yellowstone ’s largest hot spring. By the numbers: It is 200–330 feet in diameter and more than 121 feet deep.

NPS / Curtis Akin Big picture view: Grand Prismatic Spring is Yellowstone ’s largest hot spring. By the numbers: It is 200–330 feet in diameter and more than 121 feet deep.

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.

A bison wandered into the scalding water at the Grand Prismatic Spring in Yellowstone National Park on Saturday, June 21, 2025, and died, officials said.