4.8
Hot springs & geothermal areas
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.
Good to know
- Crowds
- Very busy, go early
- Best months
- Jul–Oct
- Getting there
- Best as a day trip
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