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Arguably, Yellowstone National Park's most jaw-dropping natural wonder is Grand Prismatic Spring, the largest hot spring in the United States and third-largest in the world at over 300 feet in diameter. As the center of the spring is too hot to support most life, the clear water scatters blue light while the outer water temperatures become progressively cooler and able to host various types of bacteria. These differences in habitats from the center out create the stunning rainbow of colors enjoyed by the park's 4 million annual visitors.
Arguably, Yellowstone National Park's most jaw-dropping natural wonder is Grand Prismatic Spring, the largest hot spring in the United States and third-largest in the world at over 300 feet in diameter. As the center of the spring is too hot to support most life, the clear water scatters blue light while the outer water temperatures become progressively cooler and able to host various types of bacteria. These differences in habitats from the center out create the stunning rainbow of colors enjoyed by the park's 4 million annual visitors.