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Mammoth Hot Springs Grand Prismatic Morning Glory Pool Handkerchief Pool Hot Spring Colors

One hundred years ago, one of the most famous attractions in Yellowstone was a small spring called Handkerchief Pool. Visitors threw dirty handkerchiefs into the water. The cloths were sucked into the depths, only to emerge a few minutes later, considerably cleaner. Other objects were also thrown into the hot spring, including coins, broken bottles, rocks, hair pins, and a small horseshoe.

The plumbing system of Handkerchief Pool was damaged and eventually the spring became dormant. Today this hot spring has nearly been forgotten.

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