Last year, Lake Powell and the Glen Canyon National Recreation Area drew a record number of visitors from the opening of Castle Rock Cut - a shortcut that shaves 12 miles off travel between the upper and lower ends of Lake Powell. The shortcut allows visitors to save on time and gas, and makes it easier to access remote and unspoiled canyons and beaches, including the Rainbow Bridge National Monument (the largest natural bridge in the world), Padre Bay and Warm Creek Bay.