Unnamed Thermal Spring
This 72-degree thermal spring near Bridgeport sits at 6,383 feet elevation, requiring a short 160-meter walk from the road in Mono County's moisture-rich high country. The water runs 22.9 degrees above ambient temperature in a climate that receives substantial snow and precipitation, creating seasonal thermal contrast.
The spring emerges in Jeffrey pine forest with lodgepole pine and mixed conifers creating dense shade and lush undergrowth compared to drier Eastern Sierra locations. The thermal water rises from rocky ground surrounded by verdant forest understory, creating intimate pools sheltered beneath tall trees and abundant vegetation.
The spring flows in terrain shaped by glacial activity and maintained by ongoing geothermal activity along Mono County's fault systems. The forest environment reflects the region's greater moisture compared to drier areas to the south, receiving over 103 inches of snow annually alongside 19.9 inches of rain.
A short 160-meter walk from the road makes access straightforward for most visitors. Winter snow accumulation reaches 103 inches annually, making November through April challenging for access. Bring sturdy footwear for potentially wet and muddy trail sections during snowmelt seasons. Summer and early fall offer ideal conditions for thermal soaking.
Is this spring worth visiting?
Best for
- Overnight camping trips
Rustic campsites with fire rings in Jeffrey Pine Forest. There is no trash service please pack out your trash.