2011 Map of Keystone

About this map

Mining heritage and alpine recreation intersect in this high-altitude landscape of Summit County, Colorado. The community of Keystone serves as a modern hub at the confluence of Snake River and Keystone Gulch, where contemporary infrastructure like the Keystone Ski Area sits atop a dense network of historical claims. To the east and south, the terrain climbs toward Porcupine Peak and Independence Mountain, areas heavily marked by the region's extraction history. Dozens of named operations including the Saint Johns Mines, Aladdin Mine, and Royal Tiger Group Mine indicate the intensity of early 20th-century prospecting. Substantial civil engineering is evident in the Harold D Roberts Tunnel cutting through the mountains, while the drainage of Saints John Creek and North Fork Swan River highlights the complex water management required in this mineral-rich environment.