When it’s time to relax, immerse yourself in these world famous natural hot springs. Bubbling out of natural underground springs, these hot springs are laden with minerals, but lack sulfur and therefore all you smell is the great Idaho wilderness. Take a soak in one of five pools, ranging in temperature from 102° F to 112°F, to find a pool that is just right for you. Over 2.5 million gallons of hot mineral water course through the pools each day before entering the Portneuf River, keeping the springs ever changing and clean. The grounds surrounding the pools are a botanical wonder and open to the public free of charge.