1977 Map of Diablo Canyon East

About this map

The Finlay Mountains and the winding Arroyo Diablo dominate this West Texas landscape, illustrating the critical importance of water management in the high desert during the late 1970s. The map reveals a network of man-made catchment systems like Big Yeader Tank, Broke Tank, and Old John Tank, which sustained local livestock and ranching operations. Human presence is centered on the Gunsight Ranch and the settlement of Moseley, supported by a solitary Landing Strip and a series of rugged Jeep Trails. Significant landmarks for local history include the Marr Windmill and numerous drill holes, marking the intersection of traditional ranching and modern resource exploration in the basin between Gardner Draw and the limestone uplifts.