Sulphur Spring

Sulphur Spring is a steaming hot spring located in the Crater Hills area of Hayden Valley. The water reaches approximately 89 degrees Celsius (192 degrees Fahrenheit) at its central vent and continuously releases steam and gases.

The spring formed through the same geological processes that created Yellowstone's thermal system as the North American continental plate developed. It represents one of many geothermal features that have shaped the region for countless years.

Native American tribes incorporated the spring's mineral-rich waters into their traditional practices before the establishment of Yellowstone National Park.

Visitors should keep at least 25 feet (7.6 meters) away from the spring's edge because the water is extremely hot and the ground is unstable. It is best to explore the area on foot and exercise caution, especially if the ground is wet or icy.

The spring hosts specialized bacteria that thrive at temperatures above 80 degrees Celsius (176 degrees Fahrenheit), creating distinctive mineral deposits. These heat-loving microorganisms demonstrate how life can exist even in extremely harsh conditions.

Location: Park County

GPS coordinates: 44.65470,-110.48200

Latest update: December 12, 2025 09:02