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Yellowstone National ParkBreathtaking vistas offer easy access to views of Yellowstone Lake.
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Yellowstone National Park
Mudpots and How They Work
A bubbling mudpot
Bubbling Mudpot
Where hot water is limited and hydrogen sulfide gas is present (emitting the "rotten egg" smell common to thermal areas), sulfuric acid is generated. The acid dissolves the surrounding rock into fine particles of silica and clay that mix with what little water there is to form the seething and bubbling mudpots. The sights, sounds, and smells of areas like Artist and Fountain paint pots and Mud Volcano make these curious features some of the most memorable in the park
 
Lake Trout Illustration  

Did You Know?
Lake trout are an invasive species of fish that is decimating the native cutthroat trout population in Yellowstone Lake.

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Last Updated: March 06, 2008 at 17:00 EST