Natural Wonders
Grand Prismatic Spring
yellowstone national park, United States
Grand Prismatic Spring, the largest hot spring in the US, mesmerizes with its vivid orange, yellow, and blue rings. These colors are due to microbial mats that thrive in the varying heat.
Best time to visit
Summer and Fall
Insider tip
For the best perspective, hike the nearby Fairy Falls Trail to an overlook....
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