It's not hard to find natural wonders within Yellowstone National Park, but the park's largest hot spring might be the most remarkable, and not just for its size: dubbed the Grand Prismatic Spring, ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The iconic image of Yellowstone is an expansive spring with rainbow-like colors radiating from ...

The Midway Geyser Basin's Grand Prismatic Spring is the largest hot spring in Yellowstone and one of the largest hot springs in the world. Measuring approximately 370 feet in size and around 121 feet ...

By the time the water gets to the edge of the spring, it has cooled to about 147 degrees. As the colors of the bacteria are reflected off the steam rising from the pool, Grand Prismatic's hues are ...

The beating heart of Yellowstone National Park is without a doubt the Grand Prismatic Spring—the largest hot spring in the U.S. Its colorful bands are the product of hardy bacteria and algae that live ...