Grotto Geyser is a fountain-type geyser located in the Upper Geyser Basin in Yellowstone National Park in the United States. Grotto Geyser is the …
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Tripadvisor
4.4/5 · 7 reviews
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Sep 6, 2024
This geyser is pretty large and it bubbles and glurps a lot. It’s very near old faithful and it an easy walk. Very cool to see this feature of nature.Full review by Flyingboy58
Sep 18, 2023
My fam had just completed the geyser walk around Old Faithful and made our way to Grotto geyser. We looked at it for a few minutes, then went on to the Morning Glory Pool. On the way back we noticed …Full review by gavin c
Aug 10, 2022
Grotto Geyser splashes around 16 feet once in 2-24 hours but is a regular & popular performer. The weirdly shaped cone seems to be results of siliceous sinter covering trees. We could see geyser spla…Full review by X7964NYarunk
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