The Challis Hot Springs is now part of the the Land of the Yankee Fork State Park. Located the banks of the Salmon River, our primary amenity is natural odorless hot springs which constantly replenish with continuous freshwater supplied by nature through the river rock bottoms. Most guests enjoy the springs while camping in the RV and tent campground, which features mature trees and irrigated grass sites all within a stone’s throw of the Salmon River, which fronts the entire property.