2011 Map of Union Pass

About this map

Union Pass serves as the central focal point of this high-desert landscape in Mohave County, where modern infrastructure follows the historical paths of the Old Kingman Hwy and Old Hwy 68. The topography is defined by prominent igneous formations and landforms such as Sugarloaf Mountain and the distinctive Thumb Butte. These landmarks provided essential orientation for early travelers moving through the arid basin. Hydrological features are sparse but critical, evidenced by Secret Pass Spring and the drainage patterns of Katherine Wash. Secondary routes like Buck Wash Rd and Pratt Rd branch into the foothills, illustrating how contemporary access still relies on the natural gaps and passes through the mountain range. This 2011 survey details a region where the rugged geology of the Black Mountains dictates the movement of both water and transit.