2018 Map of Union Pass

About this map

Bullhead City occupies the southwestern corner of this survey, where the urban footprint meets the high desert floor. The landscape is dominated by the dramatic uplift of the Black Mountains and notable landmarks such as Sugarloaf Mtn and Thumb Butte. A network of historic transportation routes crisscrosses the arid terrain, including the Old Kingman Hwy and the higher elevation transit through Union Pass. In an area defined by its hydrology, the ephemeral Katherine Wash and the presence of Secret Pass Spring provide essential markers in the desert geography. The map also captures local industrial legacy through names like Katherine Mine Rd, pointing to the region's mining history. The terrain transitions from the developed streets of the city to the expansive Mojave Desert, revealing how contemporary infrastructure navigates this ancient mountain pass.