1984 Map of Casa Diablo Mtn

About this map

Inyo National Forest lands dominate this high-desert landscape in Mono County, where the dramatic incision of the Owens Gorge cuts through the surrounding Volcanic Tableland. Industrial activity and infrastructure are central to this area's history, evidenced by the Casa Diablo Mine and several prospects situated near the slopes of Casa Diablo Mtn. The Owens River flows through the gorge, supported by utility landmarks such as the Powerhouse and various tailings sites, reflecting the intersection of natural resources and energy development in the mid-1980s. Transportation through the high country is marked by the steep Sherwin Grade and a network of 4WD trails that lead toward Antelope Spring and Chidago Canyon. In the southern portion, Rock Creek passes by Sherwin Hill, offering a detailed view of the transition between the volcanic plateau and the river basin.