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Doublet Pool

Pair of Tan and Teal Hot Springs

Hot Spring in Upper Geyser Basin, Geyser Hill Group on Firehole River on Upper Geyser Hill Trail, Observation Point Loop Snowshoe Trail, Observation Point Trail in Yellowstone NP, Rocky Mountains near Old Faithful, WY

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Doublet Pool is a hot spring in the Upper Geyser Basin of Yellowstone National Park, Wyoming. Doublet Pool is 8 feet (2.4 m) deep and its temperature is approximately 194.4 °F (90.2 °C). Its scalloped edge is made of geyserite. Eruptions can occur in Doublet Pool, but only last up 8 minutes. The pool on the right pulses over the vents about every two hours. Occasionally there will be vibrations, surface wave motion, and thumping; these effects are caused by collapsing gas and steam bubbles deep underground.

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