1973 Map of Floating Island SW

About this map

The Bonneville Salt Flats (Depression) dominates this 1970s orthophotomap, revealing the stark, crystalline geography of the Great Salt Lake Desert. This specialized survey, produced using photogrammetric methods from 1972 aerial photography, provides a high-resolution look at the specialized infrastructure of land-speed racing. The International Racetrack Overrun is clearly visible, extending into the northern sections of the salt crust. Surrounding the primary salt beds are expansive areas of Mud Flat, where the shifting boundaries between solid salt and seasonal wetness define the landscape. Beyond the racing surface, human transit is limited to a single Jeep Trail, emphasizing the area's environmental intensity. The map also documents essential surveying markers, including the Base Line and township boundaries such as the division between T 1 N and T 1 S.