The 18-hole "El Diablo" course at the Rancho Viejo Resort & Country Club facility in Rancho Viejo, Texas features 6,847 yards of golf from the longest tees for a par of 70. The course rating is 73.7 and it has a slope rating of 129. Designed by Dennis W. Arp/Marvin Bolin, the El Diablo golf course opened in 1971.