2021 Map of Big Maria Mountains SW

About this map

Big Maria Mountains dominate this high-desert terrain in eastern Riverside County, where steep elevation contours reveal the complex ridges and canyons of the range. The landscape is marked by geological landmarks such as Black Hill and characterized by its aridity and lack of permanent settlements. Transportation through this arid corridor is defined by isolated routes like Midland Rd and Arlington Mine Rd, which skirt the mountain foothills. This 2021 survey illustrates the modern Public Land Survey System divisions, showing the township and range boundaries that grid this portion of the Colorado Desert. The map serves as a detailed record of the physical geography and road networks utilized by those traversing the remote backcountry between the Colorado River valley and the inland desert basins.