Fumarole  in Yellowstone

Fumarole

Cracks in the Earth's surface similar to those that produce geysers and hot springs

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Use Fumarole 's guide sections to understand how this stop fits into the larger park plan.

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Fumarole Details

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Overview

Also known as steam vents, fumaroles are cracks in the Earth's surface similar to those that produce geysers and hot springs, except that they are fed with less groundwater, so their eruptions are more modest. Fumeroles typically release hot steam, sometimes with an audible hiss or even a roar.