Unnamed Thermal Spring
This unnamed 99-degree spring on the San Carlos Reservation near Globe stands out for its exceptional temperature differential—35.6 degrees above ambient—flowing in mountainous terrain at 4,286 feet elevation in Gila County.
The spring requires a short walk of approximately 1,800 feet from Tulapai Road to reach. The surrounding landscape features mixed-conifer forest with ponderosa pine, Douglas-fir, and oak creating substantial shade and cooler conditions than the lower foothills. The area receives moderate precipitation supporting diverse forest understory.
This geothermal feature reflects intense heat input from magmatic or near-surface geothermal systems associated with the San Francisco volcanic field and related crustal structures. The 99-degree thermal signature indicates circulation through unusually hot bedrock at shallow depths, typical of geologically active terrane.
Tribal permit required. Public access status unknown. The spring lies 21.4 kilometers from Kellner Group Campground, a developed recreation site in the Pinal Mountains with picnic areas and historical Civilian Conservation Corps improvements. Visit spring and fall for optimal conditions.
Is this spring worth visiting?
Best for
- Warm-water soaking
- Overnight camping trips
Overview Kellner Group Site is nestled at the base of the beautiful Pinal Mountains south of Globe, Arizona. Several picnic areas are separeted from the larger group area creating a semi-secluded setting. This site's interesting rock walls and steps were built by the Civilian Conservation Corps. It sits in the riparian area of Kellner Canyon, which frequently has a small stream running through it following winter runoff.Recreation Kellner Group Site recreation opportunities include hiking,...