Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
FerBicarbonatesManganèse
Martin Hot Springs is located in Idaho County, in the western part of the state, a mountainous region rich in geothermal springs. This iron-rich spring reaches around 38 °C, with a characteristic tint from its iron content.
Insider tip — Idaho County in north-central Idaho encompasses the Selway-Bitterroot Wilderness — one of the largest roadless areas in the continental United States, a pristine landscape of old-growth forest, clear rivers, and rocky mountain peaks where wolves and grizzly bears roam. Martin Hot Springs emerges in this extraordinary wilderness, where iron-rich thermal water provides one of the rare creature comforts for backcountry hikers traversing one of America's last great wild places.