See Yellowstone National Park’s most colorful hot springs from a great vantage point when you hike the Grand Prismatic Spring Overlook Trail. This easy trail takes hikers across the Firehole River ...

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Atlas Obscura on Slate is a blog about the world's hidden wonders. Like us on Facebook, Tumblr, or follow us on Twitter @atlasobscura. The Grand Prismatic Spring in Yellowstone National Park shows ...

Janell Duncan sent in this wonderful photo of the Grand Prismatic Spring in Yellowstone National Park. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive ...

The Grand Prismatic Spring, located within Wyoming's Yellowstone National Park, is the largest hot spring in the United States, and the third largest in the world. Here are photos of the famous ...