Photographs of Upper Geyser Basin, Yellowstone National Park

Doublet Pool is a very pretty spring along the eastern section of the Geyser Hill Loop. It has erupted only very rarely, and also infrequently emits noise from deep underground; most of the time it just steams and produces an upsurge of water which flows over the surrounding sinter (geyserite) mats. The spring is notable for the delicately scalloped edge and the thin terraces that cover much of the surface, as well as for the rich blue color of the water, hence it is a favourite subject for photographers. The pool has two near circular components, together about 40 feet across, with the closer section being most covered by the sinter.

Back to map of the Upper Geyser Basin

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