2016 Map of Marathon Gap

About this map

The Glass Mountains dominate the northwestern portion of this West Texas terrain, where the distinct passage of Marathon Gap provides a natural corridor through the high ground. This 2016 survey documents a landscape defined by seasonal watercourses and ranching infrastructure, including the Allison Ranch Airport located just off Longfellow Rd. The drainage patterns of the area are clearly marked by named channels such as Sixshooter Draw and Nineteen Draw, which flow toward the lower elevations of the W B Flats. In the southeast, the isolated rise of Clark Butte stands as a prominent landmark above Nevins Draw. This map captures a region where the vast open range of Pecos County is partitioned only by scattered ranch roads like Wagon Rd, reflecting a modern era of land use that remains deeply tied to the underlying topography.