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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 rainbow-colored spring.
Streaks of Color
(Image credit: M Storey)
Scientists with the Hayden Geological Survey of 1871 named the spring for its vivid colors, which are the result of pigmented bacteria in the algae mats that surround the spring.
Steamy Spring
(Image credit: William S Keller)
The colorful Grand Prismatic Spring measures more than 300 feet (91 meters) across, and is approximately 160 feet (49 meters) deep.
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