1967 Map of Twin Mountains

About this map

Rio Grande National Forest defines this high-elevation landscape in Saguache County, where the southern reaches of the La Garita Mountains meet the San Luis Valley's edge. This 1967 field check documents a wilderness shaped by livestock and water management, evidenced by the prominent Stock Driveway and a network of named springs like Usevia Springs and Sunday Spring. The terrain is characterized by geological landmarks such as the Natural Arch and the namesake Twin Mountains, rising above a complex system of drainages including Old Woman Creek and Little La Garita Creek. While largely protected forest land, the map records industrial potential through several Prospects located in the southwestern quadrant. The lack of improved roads and the reliance on a Jeep Trail or Pack Trail underscore the area's isolation and its primary role as a rugged watershed and grazing range during the mid-20th century.