Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Sharkey Hot Spring lies in a remote setting in Idaho's Salmon River Mountains. Its sulfurous water reaches around 42°C (108°F), feeding an open-air pool popular with wild-bathing enthusiasts.
Insider tip — Sharkey Hot Spring lies deep in the Frank Church River of No Return Wilderness in central Idaho, one of the largest roadless areas in the contiguous United States. The sulfurous spring feeds a wooden soaking tub maintained by the US Forest Service, accessible only by a challenging backcountry trail or float trip down the Main Salmon River. The surrounding granite peaks and old-growth ponderosa pine forest create a wilderness setting of exceptional grandeur. The remoteness virtually guarantees solitude, and the dark sky above the canyon is among the most spectacular in the American West.