1994 Map of Casa Diablo Mtn

About this map

Casa Diablo Mtn anchors this high-desert landscape in the mid-1990s, where the eastern Sierra foothills meet the Volcanic Tableland. Industrial and water management history is etched into the terrain through a complex system of infrastructure along the Owens River Gorge, featuring Tunnel No 1, Tunnel No 2, and Tunnel No 3 feeding into a Powerhouse. The map documents the resource extraction history of the area at the Casa Diablo Mine and several scattered prospects, while also highlighting evolving conservation priorities through the designation of the Fish Slough Area of Critical Environmental Concern. Transportation history is visible in the winding path of the Old Sherwin Grade as it navigates the elevation changes near Sherwin Hill, contrasted with the straight utility of the Casa Diablo Road cutting across the Inyo National Forest.