1973 Map of Grayback Hills

About this map

Hill Air Force Range dominates the northern expanse of this 1973 orthophotomap, where military restricted zones overlap with the arid terrain of the Great Salt Lake Desert. This specialized quadrangle uses an orthophoto base to reveal the stark geological transitions between the expansive Mud Flat to the west and the prominent elevations of the Grayback Hills. The imagery provides a clear look at the industrial and infrastructural marks on this isolated landscape, such as the Gravel Pits tucked near the ridges and the clear east-west demarcation of the Base Line. To the east, the map tracks the subtle topography of Ripple Valley, offering a precise record of desert geomorphology and military land use during the early 1970s.