YELLOWSTONE NATIONAL PARK, WYOMING -JULY 23: Grand Prismatic Spring, Yellowstone's largest hot spring, is nearly 300 feet wind and 121 feet deep. The thermophiles give the spring its vibrant colors on the edge on July 23, 2024 in Yellowstone National Park, Wyoming. (Photo by Jonathan Newton/Getty Images) | Getty Images Jim McLennanSun, Jul 5, 2026·2 min read