1969 Map of Hogup Ridge South

About this map

Hogup Ridge rises sharply from the expansive Mud Flat terrain in this 1969 orthophotomap, documenting a remote section of Box Elder County. The northern portion of the map is dominated by the industrial precision of the Southern Pacific (Lucin Cutoff), which cuts a straight line across the flats. This engineering marvel, crucial to transcontinental rail history, is contrasted by the military operations in the southern half of the quadrangle. A significant portion of the landscape is dedicated to the Hill Air Force Range, where specialized features such as the Target Guide and labeled targets indicate the area's role in mid-century defense testing. The transition between the high ground and the desert floor is marked by the aptly named The Threshold, providing a clear look at the geological and human boundaries of this isolated region.