• Steamed_Goose.jpg
  • Divine_Retribution.jpg
  • Cliff_Geyser_Explosion.jpg
  • Spring_Runoff_--_Black_Sand_Basin.jpg
  • Rainbow_Pool_Panorama.jpg
  • Big_Splash_at_Grotto_Geyser.jpg
  • Spasmodic_Geyser.jpg
  • Rodential_Contemplation.jpg
  • Solitary_Geyser.jpg
  • Captive_Audience_--_Old_Faithful_from_Observation_Point.jpg
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Big Splash at Grotto Geyser

Grotto Geyser is named for the interesting cavern-like shape of its "cone". I put the terms in quotes because what you see when you look at the geyser cone is only partially the cone itself; the standing formations are actually trees, which over the course of many years, have been covered in sinter forming the intricate structure of the geyser.

Grotto is a very active geyser, often spurting, gurgling and splashing for hours at a time. It only reaches a maximum height of 20 or 25 feet; this image shows one of the biggest splashes I saw when we were there.
Big Splash at Grotto Geyser