Hospital Hot Spring is a wild thermal spring in Lemhi County, Idaho, within a sparsely populated mountainous region. The open-air pool is reached through wild bathing, off the beaten path.
Insider tip — Hospital Hot Spring in the Frank Church-River of No Return Wilderness, Lemhi County, Idaho — very close to Loon Creek Hot Spring. Its name recalls how early travelers or ranchers used this spring. Remote and undeveloped. Deep wilderness access only.