1966 Map of Elwood Pass

About this map

The Continental Divide dictates the high-altitude hydrology of this mid-1960s landscape, serving as the border between the San Juan National Forest and Rio Grande National Forest. Remote human activity is concentrated at high-elevation crossings like Elwood Pass and Summit Pass, where primitive jeep and pack trails navigate the steep terrain. Evidence of early industry and habitation appears at the Black Diamond Mine and McCormick Cabin, while the Elwood Guard Sta near Iron Creek indicates the ongoing administrative presence of the forest service in this era. The map reveals a complex network of headwaters, including the West Fork Rio Grande and East Fork San Juan River, punctuated by features like Handkerchief Mesa and Schinzel Flats.