sulphur spring

Sulphur Spring (also known as Crater Hills Geyser), is a geyser in the Hayden Valley region of Yellowstone National Park in the United States. Sulphur spring has a vent Temperature of although the actual temperature of the spring is . It is located in the Crater Hills area of Hayden Valley about west of the Grand Loop Road.

Mineral springs are naturally occurring springs that produce water containing minerals, or other dissolved substances, that alter its taste or give it a purported therapeutic value. Salts, sulfur compounds, and gases are among the substances that can be dissolved in the spring water during its passage underground.