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 89 C although the actual temperature of the spring is 79.8 C. It is located in the Crater Hills area of Hayden Valley about 1 mi west of the Grand Loop Road.