1955 Map of Lead Mountain SW

About this map

The Bullion Mountains dominate this mid-century desert landscape, illustrating a period of intense military activity within San Bernardino County. Much of the northern terrain is occupied by the Marine Corps Training Center, while the southern reaches are defined by a clear Naval Reservation Boundary. Topographic details reveal the high-elevation passage at Cleghorn Pass, a natural corridor through the steep ridges. Outside of the primary reservation limits, the land is marked by an occasional Jeep Trail, indicating the sparse infrastructure and remote nature of the region during the 1950s. This survey, compiled from 1952 aerial photography, captures the exact limits of these military zones at a time of significant post-war expansion in the California desert.