1985 Map of Calumet Mountains

About this map

The Calumet Mountains dominate this 1980s landscape, providing a clear view of the high desert topography in San Bernardino County. This provisional survey captures the transition from the steep, rocky slopes of the mountains down into the expansive Cadiz Valley to the east. The terrain is marked by intricate drainage patterns and isolated Sand Dunes that have accumulated along the valley floor. While the area is largely uninhabited, the presence of numerous bench marks and vertical flight benchmarks, such as BM 202.1 and Vfbo-F 3-99, indicates the intensity of geodetic survey work required to map this arid corner of the Mojave Desert. The map serves as a precise record of the landforms and elevation changes defining this part of the California interior during the mid-1980s.