If you’ve ever been to Grand Prismatic, located in Yellowstone National Park, you know that it more than lives up to its name. The “Grand” part is easy to explain; it’s the largest hot spring in the United States, and third-largest in the world. “Prismatic” comes from the spectacular coloration, from blue to green to yellow, left behind by the mineral-rich water. Relive your trip to this unique place with our Grand Prismatic Crew Socks. Collect Grand Prismatic along with Monument Valley, Delicate Arch and Glacier National Park.