oregon territory

On a remote sagebrush flat in the Red Desert in northern Sweetwater County, Wyo., four flagpoles and a stone monument mark the intersection of what once were the Louisiana Purchase, the Oregon Country and Mexico. Nothing much ever happened there—but the site remains a linchpin of the American West.

Just beyond the summit of South Pass stand the Oregon Buttes—two flat-topped hills and a smaller, conical one. To Oregon Trail travelers coming from the east, the buttes, more often called Table Rocks, dominated the horizon of that vast, treeless landscape for a day’s travel or more.