2013 Map of Bullis Gap

About this map

Bullis Gap and the Bullis Gap Range dominate this borderland landscape where the rugged West Texas terrain meets the Rio Grande. The area is defined by a complex network of dry watercourses and high points, including Cedar Gap, Mount Karen, and Wolfe Point. Human presence is sparse and focused on ranching and seasonal camps, evidenced by Bullis Gap Ranch and the Valdez Goat Camp. These sites, along with artificial water sources like Bullis Gap Tank and Britton Tank, illustrate the critical infrastructure required for survival and livestock management in this arid environment. The map provides a detailed look at the numerous canyons draining toward the river, such as Las Yeguas Canyon, Silber Canyon, and Haack Canyon, which carve through the limestone geology of the Big Bend region.