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Sulphur Caldron

Wyoming USA

The Sulphur Caldron area can be viewed from a staging area just north of Mud Volcano. The yellow, turbulent splashing waters of the Sulphur Caldron are among the most acidic in the park with a pH of 1.3. Other features which can be viewed from this overlook are Turbulent Pool (which is no longer "turbulent") and the crater of a large, active mud pot.

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