- Please support our journalism through affiliate links. Affiliate Disclosure
- Written by our human editors, structured with the help of AI.
Review & FAQ:
-
Where is the Grand Prismatic Spring located?
- The Grand Prismatic Spring is located in the Midway Geyser Basin.
-
How big is the Grand Prismatic Spring?
- It is the largest hot spring in Yellowstone Park at 370 feet wide and over 120 feet deep.
-
What is the temperature of the Grand Prismatic Spring?
- Its natural core temperature is 160 degrees Fahrenheit.
-
Why is the Grand Prismatic Spring famous?
- The most spectacular thing about this spring is its ever-changing colors.
-
How do the colors of the Grand Prismatic Spring change?
- During the summer months, its outer edge features reds and oranges, while in the winter, it naturally changes to a stunning holiday green.
-
What color is the interior of the Grand Prismatic Spring?
- The pool’s interior remains a sparkling azure blue, which provides a striking contrast to the edges.
-
How can visitors view the Grand Prismatic Spring?
- Visitors can view the spring by hiking the Fairy Falls trail or walking the 0.8-mile boardwalk that passes Excelsior Geyser.

© Courtesy of lucky photo - Fotolia.com
Rating: ⭐⭐⭐⭐⭐
Yellowstone National Park
Jackson
Cody
Cheyenne
Casper
Thermopolis
Rock Springs
Buffalo
Grand Teton National Park
Yellowstone Lake
Ten Sleep
Sheridan
Lander
Dubois
Grand Canyon of the Yellowstone
Devils Tower National Monument
Upper Geyser Basin
Grand Prismatic Spring
Laurance Rockefeller Preserve
Bridger-Teton National Forest
Bighorn National Forest
National Elk Refuge
Castle Gardens Petroglyph Site
Thunder Basin National Grassland
Plan Your Trip
Get Ready to Go!
- Search flights and stays nearby.
- Book your tour or local activity.
- Book your car rental.
Need some more help?
Go to travel reservations.