Bear Creek Hot Springs is one of eastern Idaho's most rewarding backcountry soaks — a natural rock pool hidden deep in the Caribou-Targhee National Forest, reached only on foot, by bike, or on horseback up a long and beautiful canyon. It sits near Irwin, just south of Palisades Reservoir on the Idaho–Wyoming line, and it's the kind of place you have to earn: roughly 13 miles round trip, which is exactly why the people who make it tend to have the pool to themselves.

The good news is that most of that distance is gentle. From the trailhead the route follows Bear Creek up a green, forested canyon under lodgepole and aspen, rolling along at an easy grade with the water always close by. Wildflowers fill the meadows in early summer, and thanks to newer bridges and dry bench paths you can now keep your feet out of the water and skip the old creek crossings (in spring runoff those fords ran high, so the dry routes are a welcome upgrade). It's pretty, low-effort walking for miles.

Then comes the part everyone remembers. The final stretch climbs hard — close to a thousand feet in the last mile — so save your energy for that last push and fill your water bottles before you start up. The reward is immediate: a clear natural pool, roughly 10 by 20 feet, sitting at just about the perfect soaking temperature after all that trail. Tucked this far back in the wilderness, it's quiet, private, and worth every step. One honest heads-up before you bring the family: the soak is frequently clothing-optional.

This is true backcountry, and it's a favorite across the board — hikers and backpackers come for the soak, mountain bikers ride the intermediate singletrack with its fun, branching loop options, and horseback riders share the same trail. Many turn the trip into an overnight, camping in the backcountry to enjoy a quiet, starlit soak before hiking out in the morning.

Come prepared for a remote mountain trip: pack plenty of water and plan to filter from the creek, bring bug repellent in early summer, and carry bear spray, since this is bear country and sightings are common. The trailhead has a parking area and a restroom, but no services beyond that, and there's no cell coverage once you're in the canyon — so let someone know your plan and give yourself plenty of daylight for the round trip. The trail is at its best from late spring through fall, roughly March into October, when the canyon is green and the water is just right. Few places in the region pay you back like Bear Creek does.