1979 Map of Purgatory Canyon

About this map

The Virgin River carves through this northern Arizona landscape, marking a transition between the elevated plateaus and deep canyon systems of Mohave County during the late 1970s. The map illustrates a region defined by its harsh nomenclature and ranching heritage, featuring Blakes Lambing Grounds in the northwest and Starvation Point overlooking the river valley. Transportation and water management are central themes, seen in the Black Rock Interchange and the State Line Reservoir near the Utah border. The topography is meticulously detailed, from the sharp ridges of Grey Points and the Lime Hills to the winding depths of Purgatory Canyon and Little Purgatory. Geologic and agricultural landmarks like Mokaac Mountain, Dinner Flat, and a lone Corral provide grounding for local history and environmental study.