2015 Map of Martinez Mountain

About this map

Martinez Mtn and the Santa Rosa Mountains dominate this high-desert landscape in the southern California interior. The map illustrates a dramatic topographical transition from the agricultural and residential outskirts of the Coachella Valley in the northeast to the protected wilderness of the San Bernardino National Forest. This 2015 survey details a network of canyons, including Devil Canyon, Agua Alta Canyon, and Black Rabbit Canyon, which define the drainage patterns of the range. The presence of Agua Alta Spring and the open expanse of Pinyon Alta Flat suggest the unique ecological and hydrologic features that have shaped human and natural activity in this arid region. On the valley floor, the encroachment of modern development is visible through labels like Quarry Ranch Rd and Fazio Ln S, contrasting with the vast roadless areas of the mountains.