User:WikiBunny11/draft

Doublet Pool is a hot spring in the Upper Geyser Basin of Yellowstone National Park, Wyoming.

Doublet Pool is 8 ft deep and its temperature is approximately 194.4 °F. Its scalloped edge is made of geyserite. Although geysers rarely occur in Doublet Pool&mdash;only two or three have been seen&mdash;the pool on the right pulses over the vents about every two hours. Sometimes, there will be vibrations, surface wave motion, and thumping; these are probably caused by collapsing gas and steam bubbles deep underground.