Road Trips Stops on the Way Idaho Stops on the Way 9 Undiscovered Southern Idaho Gems near Yellowstone Early morning view of the Monument grounds and the Snake River in Hagerman Fossil Beds National Monument Early morning view of the Monument grounds and the Snake River in Hagerman Fossil Beds National Monument Under construction Share this Facebook Icon Twitter Icon Email Icon Join Yellowstone National Park Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In Join Yellowstone National Park Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In Photo: NPS/John S. Chao