Grand Prismatic Spring - Yellowstone National Park, WY
Posted by: 
Metro2
N 44° 31.543 W 110° 50.292
12T E 512857 N 4930278
The Grand Prismatic Spring in Yellowstone National Park is the largest hot spring in the United States, and the third largest in the world.
Waymark Code: WMW15N
Location: Wyoming, United States
Date Posted: 06/25/2017
Views: 13
Wikipedia (
visit link) informs us:
"The Grand Prismatic Spring in Yellowstone National Park is the largest hot spring in the United States, and the third largest in the world, after Frying Pan Lake in New Zealand and Boiling Lake in Dominica. It is located in the Midway Geyser Basin.
Grand Prismatic Spring was noted by geologists working in the Hayden Geological Survey of 1871, and named by them for its striking coloration. Its colors match the rainbow dispersion of white light by an optical prism: red, orange, yellow, green, and blue."
and this website (
visit link) has this to say about the stamp:
"Depicting a hot spring in Yellowstone National Park, this unique 12 x 12-inch “earth art” image is from the U.S. Postal Service Earthscapes Forever® stamps.
At the center of Grand Prismatic Spring in Yellowstone National Park, water temperatures reach nearly 190 degrees F—too hot to support most life—but along the edges of the pool, bacteria and algae can thrive, as indicated by the colorful pigments and mats they produce."