About 4 miles east of the Pharr/Reynosa International Bridge.

About 2,000 acres of thick, brushy growth, typical of Valley before agricultural development. Preserves and protects abundant wildlife and plant species, many found nowhere else in U.S. Rare birds prominent during winter season. Interpretive wildlife tram operates late Nov. - mid-Apr.; admission for tram ride. Private cars use 7-mile wildlife drive on days when tram isn't operating. Walk-through access any time during daylight hours. Three self-guided nature walks; one for wheelchairs.