1952 Map of Duncan Peak

About this map

Tahoe National Forest landscape within the Sierra Nevada is defined by a deep network of canyons and mining infrastructure from the mid-twentieth century and earlier. The map reveals the intricate engineering of the gold-mining era, showing numerous subterranean features like the Golden Fleece Tunnel, Hogback Tunnel, and Union Tunnel alongside surface operations at the Macedon Mine and American Hill Mine. Water management for these operations is evident through the winding Iowa Hill Ditch and the American Hill Reservoir. High-altitude surveillance is centered on the Duncan Peak Lookout Tower and the now-labeled Big Valley Bluff Lookout Tower (Aband), which survey the steep drainages of the North Fork American River and the many ravines carving through Macedon Ridge and Whisky Hill.