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Mudpot at Artists' Paintpots

Detailed Description

This mudpot is located at the upper level of the trail at the Artists' Paintpots in Yellowstone National Park, Wyoming. Some people will smell rotten eggs, others might even pick up the scent of hickory-smoked ham. 

According to the National Park Service, "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."

Sources/Usage

Public Domain.