1970 Map of San Gorgonio Mtn

About this map

San Gorgonio Mtn dominates this high-altitude landscape of the early 1970s, marking the rugged transition from the high peaks of the San Bernardino National Forest down toward the canyon floors. The map details a wilderness area defined by significant topographic relief, where the headwaters of the Whitewater River and the San Gorgonio River begin their descent. Man-made interventions in this remote terrain are notable, including the Big Oaks Powerhouse and a Flume system in the southwest, alongside the Diversion Dam and Radio Facility near Snow Peak. Historical use of the land is evident in the presence of seasonal dwellings such as the South Fork Cabins and East Fork Cabin, as well as extractive activity at the Mill Creek Mine (Quarry). The map also preserves the boundaries of the Morongo Indian Reservation and the San Gorgonio Wilderness, illustrating the complex management of this high-country environment.