1967 Map of Grays Peak

About this map

Pioneer Mountains peaks dominate this high-altitude landscape along the border of Custer and Blaine counties. This mid-century survey captures a wilderness interface where the Challis National Forest and Sawtooth National Forest meet. Prospecting history is etched into the terrain at the Sunshine Mine, Mascot Mine, and Iron Mine, while numerous pack trails provide the only access through steep features like Paymaster Gulch and Snowslide Gulch. The hydrology of the region is defined by glacial remnants such as Arrowhead Lake, Windy Lake, and the tiered Upper Box Canyon Lake and Lower Box Canyon Lake. These waters feed the Wood River and Little Wood River systems, which flow south through narrow corridors like Box Canyon and Schuss Canyon. The map records a moment of isolated mountain activity, including a Jeep Trail and remote markers like Brocky and Pasture.