Via Sonora Caverns Road aka RR1989 (see directions above to get to RR 1989), which later turns into County Road 410, CR 410 T's into Ranch Road 189 (stay right), and that T's into Hwy. 163. At Hwy. 163 go north to Ozona, then take I-10 east to RM1312, take RM 1312 east to RM 2129, turn left on RM 2129 and head east to X Bar Ranch, 105 mile loop.