4K - YELLOWSTONE NATIONAL PARK'S - DRAGON'S MOUTH HOT SPRING 2023

Dragon's Mouth Spring
The Crow saw the steam from this mudpt as snorts of an angry bull bison. An unknown European American gave it the current name. Its previous names include Gothic Grotto, Blowing Cavern, and The Belcher.

The surging action has decreased since 1994, though no one is sure why. In 1999, more dramatic changes occurred: the water temperature dropped 10 degrees and the color changed from green to chalky white.

Hot springs are the most common hydrothermal features in Yellowstone. Their plumbing has no constrictions.Superheated water cools as it reaches the surface, sinks, and is replaced by hotter water from below.This circulation prevents water from reaching the temperature needed to set off an eruption.

Mudpots are acidic features with a limited water supply. Some microorganisms use hydrogen sulfide, which rises from deep within the earth, as an energy source. They help convert the gas to sulfuric acid, which breaks down rock to wet clay mud and creates the area’s smell. The pungent odor of rotten eggs is caused by the hydrogen sulfide gas.

Various gases escape through the wet clay mud, causing it to bubble. Mudpot consistency and activity vary with the seasons and precipitation.

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