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1960 Map of Engineer Mountain

Name: 1960 Topographic Map of Engineer Mountain
Creator: U.S. Geological Survey
Published: 1974
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1974

About this map

Engineer Mountain dominates this portion of the San Juan National Forest, where the high-altitude landscape of southwestern Colorado is defined by drainage systems and technical surveying boundaries. The map records the meeting of San Juan, Dolores, and La Plata counties, marked by an Indefinite Boundary south of the mountain peak. Human activity is concentrated along the corridors of the Aqueduct and the winding route through Coal Bank Pass, with recreational and administrative outposts like the Columbine Ranger Sta and Mill Creek Lodge providing early nodes for mountain access.

The presence of the Harris Ranch along the East Fork Hermosa Creek highlights the era's agricultural footprint in the alpine valleys. Extensive water features, from the high Potato Lake to the meandering Lime Creek, are interconnected by a network of primitive transport routes including the Highline Trail and various unnamed jeep trails, illustrating how the area was navigated before more modern infrastructure took hold.