Grand Prismatic Spring is the largest hot spring in the United States, and one of the largest in the world. The feature is located in Midway Geyser Basin — so named because it is between the Upper and ...
A bison fell into the 160-degree Grand Prismatic Spring and died. An eyewitness tells us the ordeal was like seeing "the circle of life unfold.” The summer crowds at Yellowstone National Park were ...