Bruneau Hot Spring
Bruneau Hot Spring sits a mile from Mountain Home Air Force Base in Elmore County, about as close to a town as any spring in this part of Idaho gets. The water measures in the mid 100s, soaking warm. Who owns the land and whether you can reach it are both blank on file, and no picture is on record. Hot Creek Road passes right beside it.
This is low desert. At around 2,600 feet the climate runs dry and mild, under a foot of snow in a year and about ten inches of rain. Summers are hot. The spring is roadside, a hundred feet or so off Hot Creek Road, so there is no walking involved, only the question of whether you are allowed to stop.
Winter tops the list, which fits a desert this high up where snow stays rare and the air cools off. No campground shows up nearby. The chemistry sample dates to 1989 and read mildly alkaline. Access has never been recorded, and with the base sitting a mile off, it is on you to learn who the landowner is first.
The water at Bruneau Hot Spring is alkaline (pH 8.6).
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