1985 Map of Dove Mountain

About this map

The Rio Grande snakes through the center of this 1985 study, carving a deep international boundary between Texas and Coahuila. This arid borderland is defined by massive limestone features and drainage systems, including the complex Reagan Canyon and Big Canyon networks that feed into the river. To the west, the Black Gap Wildlife Management Area encompasses a rugged topography of peaks like Stillwell Mountain and Black Mountain, positioned near the northern reaches of the Sierra del Carmen. The map captures a landscape of intense isolation, where the Bullis Gap Range and Horse Canyon dominate the terrain, and named peaks such as Dove Mountain and Cupola Mountain serve as essential landmarks for navigation across the Chihuahuan Desert floor. Long stretches of dry washes like San Francisco Creek illustrate the seasonal hydrology that has shaped the canyons of the Trans-Pecos.