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1966 Map of Elwood Pass

Name: 1966 Topographic Map of Elwood Pass
Creator: U.S. Geological Survey
Published: 1975
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1975

About this map

Elwood Pass and the surrounding high country of the Southern Rockies are captured here in a 1966 field study, documenting the intricate boundary lines between Mineral, Rio Grande, Conejos, and Archuleta counties. This high-altitude landscape is defined by the Continental Divide Trail and a network of jeep and pack trails that connected isolated outposts like the McCormick Cabin and the Elwood Guard Sta.

Resource extraction and transit history are visible through features such as the Black Diamond Mine near the headwaters of the East Fork San Juan River. Significant terrain landmarks, including Handkerchief Mesa and Schinzel Flats, provide context for the era's land management within the Rio Grande National Forest and San Juan National Forest. The map also traces the path of a high-altitude pipeline and various stock driveways, reflecting the dual uses of the land for utility infrastructure and seasonal grazing.