Bumgartner Hot Spring, in Camas County, Idaho, delivers thermal water at around 43°C (109°F) in an open-air pool, valued for wild bathing amid open countryside.
Insider tip — Baumgartner Hot Springs (often spelled Bumgartner) is a popular developed hot spring in the Sawtooth National Forest of central Idaho. Unlike many Idaho wilderness springs, it has a proper soaking pool and basic facilities — ideal as a base camp soak. Located near the South Fork of the Boise River.