Snake River Hot Springs
This unassuming looking hot spring, though it is shallow, is perfect for lying on your back and allowing hot tub temperature thermal water flow over your shoulders. Green pieces of algae float by in the current, and occasional drafts of cool water trickle in from the Snake River. But overall the experience is of heat and solitude. There is a backcountry camp nearby, but it's also one of most rewarding day hikes in the area.