Pure Hell! A network of military roads, double track, rocky very technical singletrack, smooth singletrack through some forest. Very tough climbs, both single and doubletrack. Don't bike alone. There are many trails out there, I'm not sure how many miles. I couldn't find a good map, but there may be one. Big climbs. Not for beginners. Even if you take a short loop, the climbs will test you. There are even sounds of artillary fire, and you might even see some helicopters, or other military training. I'm not sure if this place is open year round. Call Mud, Sweat, and Gears in Lawton (580-510-9224) or LETRA (580-442-5541).