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Old Faithful
Area Tour

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South Section
Interactive Map

North Section
Interactive Map

Grotto Geyser

Grotto Geyser has a weirdly shaped cone reminiscent of cave-like formations.
Grotto Geyser's Cone

Grotto Geyser erupts about every eight hours. It splashes to a height of 10 feet (3m) for 1 1/2 to more than 10 hours. The weirdly shaped cone, that gives this geyser its name, may have resulted from geyserite covering the trunks of trees that once grew there.

Old Faithful Area Tour
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