Probably originally established by ancient Native Americans, this road was used in the early 1900s by ranchers to drive cattle into the canyon. Originally narrow and rugged, it was upgraded during the uranium boom when miners hauled ore by truck from the canyon floor. This view of the road's winding route down canyon walls is from the Shafer Canyon Overlook. Today, Shafer Trail is used by daring four-wheelers and energetic mountain bikers. It descends 1,400 feet to the White Rim and another 700 feet to the Colorado River.