Greylock Hot Spring is located in Valley County, Idaho. This thermal spring is enjoyed in an open-air pool or through wild bathing, in a wild natural setting.
Insider tip — Greylock Hot Spring in Valley County, Idaho — backcountry geothermal spring in central Idaho's mountain wilderness. Remote free soaking accessible via forest roads or trails. Idaho's volcanic highlands have hundreds of natural hot spring sites throughout the Salmon River Mountains.