1955 Map of Opal Mountain

About this map

Superior Valley dominates this 1955 survey of the Mojave landscape, where water security dictated the survival of early desert ventures. The map identifies a network of essential water sources including Slocum Well, Murphys Well, and Crutts Well, which supported both livestock and transient mining operations. Geologic and archaeological interest is concentrated in the southern hills, specifically around the Rainbow Basin and Fossil Canyon, while Inscription Canyon hints at the region's deeper cultural history. Settled life is represented by isolated outposts such as Coolgardie Camp and the agricultural efforts at Blacks Ranch and Rainbow Ranch near the edge of Harper Lake. The presence of scattered shafts and prospects near Opal Mountain reflects the mid-century mineral exploration that characterized this section of San Bernardino County.