At the end of Granite Creek Road off of highway 189 is Granite Hot Springs - 43° 22.188'N 110° 26.754'W
It is an open outdoor swimming pool with a fee to use. There is a small USFS campground a short distance down the road - before you reach the springs. There are dispersed sites along the river between 189 and the springs. Below the springs is a large waterfall. At the base of the falls is a primitive hot springs pool, but you need to wade the river to reach it. Care MUST be taken, especially early summer.