From the view on Paul Bunyans Potty, drive up Horse Canyon approximately 5 mile to the sign "Castle Arch trail" on the right. Hike this trail 20 minutes to the arch viewpoint. The arch has a span about 165 feet (50 meters). This spectacular delicate opening is actually a double arch. On a close observation, you can see two breaks in the lintel making the arch very fragile. This arch is located and named on the 7.5 topo map "South Six-Shooter peak". NABSQNO 12S610487-4213778.