Camping Fishing Hunting Rio Costilla Park is the ideal get away place whether you prefer time alone, with family or a gathering among friends. Camping and Fishing on nearly 10,000 acres and Hunting on 80,000+ acres located in Northem Taos County of New Mexico. Rio Costilla borders the San Luis Valley of Southern Colorado and the Valle Vidal Unit of Carson National Forest. Owned and Operated by Rio Costilla Cooperative Livestock Association (RCCLA) Rio Costilla Park, Nature At Its Best! Taos Funding provided by (575) 586-0542 (800) RIO-PARK www.RioCostillaPark.com Taos Lodgers Tax.