Beryl Spring, located between Mammoth Hot Springs and Madison Junction in Yellowstone National Park, was named for the ...

These colors are caused by thermophilic bacteria that thrive on the rich minerals produced by the water around the hot spring. The center looks blue, but actually isn't – the blue wavelengths of ...

How the Grand Prismatic Spring Gets Its Kaleidoscopic Colors The beating heart of Yellowstone National Park is without a doubt the Grand Prismatic Spring—the largest hot spring in the U.S.