2010 Map of Bullis Gap

About this map

Bullis Gap Range dominates the interior of this borderland survey, where the international boundary between the United States of America and Estados Unidos Mexicanos follows the winding course of the Rio Grande. The landscape is defined by a network of drainage features and mountain passes, including Bullis Gap and Cedar Gap. Human presence is sparse, marked primarily by the Valdez Goat Camp and essential water catchments such as Bullis Gap Tank and Britton Tank. Numerous named canyons, including Kellogg Canyon, Las Yeguas Canyon, and Jackson Canyon, carve through the high ground, illustrating the complex drainage patterns leading toward the river. This 2010 edition records the remote geography of the Big Bend region, documenting the named peaks and arroyos that have long served as landmarks for ranchers and border patrols.