1979 Map of Yellowhorse Flat

About this map

The Arizona and Utah borderlands south of St. George are defined here by a high desert landscape of mesas and drainage systems. Centered on the sprawling Yellowhorse Flat, the area is flanked by the prominent East Mesa and West Mesa. Local infrastructure in the late 1970s is minimal, consisting of livestock-related features like The Well and several Water Tanks, alongside remnants of human activity such as a Prospect and a Gravel Pit. Notable landmarks include Joe Blake Hill and the elevated terrain of Little Black Mtn. The transport network relies on historical routes like the Sunshine Trail and Pack Trail, which navigate through rugged washes including Dutchman Draw and Fort Pearce Wash. This map documents a period when the Mohave County backcountry remained primarily used for ranching and small-scale resource extraction.