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Geysers of the World   

Geysers of Yellowstone   



  Botryoidal Spring
Feature Type: Geyser
Geyser/Spring Type: Fountain geyser

Lower Geyser Basin
Great Fountain and White Creek Group

Triggered by a series of small tremmors in the area in 1996 Botryoidal became a very fun geyser to watch. Prior to this, Botryoidal behaved as small perptual spouter. Since 1996 it has been a true geyser characerized by explosive eruptions. Its fountain-type eruptions start explosively, lifting the entire pool of water above the crater rim before the steam driving the eruption finally has chance to burst through the water. The eruptions reach about 10 feet, durations are about a minute and intervals are about 3 to 5 minutes. Activity since 1996 has remained pretty much the same though some minor variations have been seen.

Botryoidal is easily visible from the road to Great Fountain Geyser.

What to look for:
About a minute prior to the eruption, small bubbles start rising to the surface of Botryoidal's pool which lies about a foot or two below the surface. Suddenly, the water quickly rises and the eruption is on. After the eruption has finished, the water level again drops about a foot or two below the surface.

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Please note - this site is currently under constuction. Please visit for more information.  Last update 08-17-11

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