National Recreation Area
Grand Prismatic Spring
Overview
Service & Activities
Overview
Service & Activities
About
The Grand Prismatic Spring is 370 feet in diameter and the largest of the hot springs in Yellowstone. The center is an intense azure blue. The hot water produces algae to grow with colors ranging from orange and green to golden brown.
Contact
MAILING ADDRESS
PO Box 168
Yellowstone National Park, WY 82190
Yellowstone National Park, WY 82190
CONTACT
307-344-7381
Details
SEASON
May - September
SPECIAL DIRECTIONS
The Grand Prismatic Spring is accessed by taking the Midway Geyser Basin boardwalk.
SERVICES
Trail
ACTIVITIES
Bird Hunting
Hiking
Mountain Biking
Photography
Sightseeing
Wildlife Viewing
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