At nearly 113 m (370 ft) across and 37 m (121 ft) deep, Grand Prismatic Spring holds the title of the largest hot spring in America and one of the largest in the world. A premier attraction at Yellowstone National Park, the spring's fame traces back to early explorers and fur trappers who first noted it in the early 1800s. The boiling pool constantly steams and bubbles, with its vivid, rainbow-like appearance--the result of pigmented bacteria. To get a close-up view, walk along the park's boardwalk, which leads to a route close to the water's edge. Stay on the path, as the high temperatures of the pool can be dangerous. Plan to visit Grand Prismatic Spring and other customer-reviewed, writer-recommended Yellowstone National Park attractions using our Yellowstone National Park travel route app.
Tours To Grand Prismatic Spring
Grand Prismatic Spring Reviews
Beautiful views if you stand at the very edge, just don't fall in. And also make sure to not drop anything in unless you want it boiled in three seconds. more »
This is one of the most beautiful sights in the Yellowstone park. It is also the most frustrating as the best views are from the air. I don't know if they will let you fly a drone there, but I would..... more »
Amazing place! One of the world’s largest and deepest hot springs. Beautiful!
There is a hike to a top overlook that is highly recommend. Wonderful colors. Amazing.
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