1988 Map of Blue Mountain

About this map

Chocolate Mountains dominate this 1980s landscape in Imperial County, defining a region largely shaped by military and mining activity. The expansive Aerial Gunnery Range occupies a significant portion of the terrain, indicating the area's specialized use for defense training during the late 20th century. This restricted land use is contrasted by the scattered evidence of mineral exploration, particularly at the Black Eagle Mine and the Mary Lode Mine. These sites, along with isolated labels for a Prospect, point to the enduring interest in the geological resources of the high desert. Essential water sources in this arid environment are rare, with Cottonwood Spring serving as a vital natural landmark. To the north, the elevation rises toward Blue Mountain, offering a clear view of the topographical complexity that characterizes this part of the California desert.