South Devils Garden turn around is located 18.4 miles from visitor center at the end of the main road. This area boasts the largest collection of significient natural arches in the world by kilometer square. South Devils Garden contains 12 of the 25 largest arches in the park. Landscape Arch is the longest arch in the world with over 300 feet span. This magnificient arch with his finest arc of rock (11 feet tickness in span center) is incontestably a natural gem. See below for a gallery of fine arches in South Devils Garden.