Sioux Lookout, the highest point in Lincoln County, was a prominent landmark on the overland trials. From its lofty summit the development of the West unfolded before the eyes of the Sioux and other Indians. Trappers and traders came by here in 1813, the first wagon train in 1830, and the first missionary in 1834. In 1836 Narcissa Whitman and Elizabeth Spalding became the first white women to travel the trail. During the Indian War of 1864-1865, its prominence gave a clear view of troop and Indian movements below.
Gold seekers enroute to California, homesteaders seeking free land in the West and a religious people seeking a haven in Utah--all are part of the history of this valley. Here echoed the hooves of the Pony Express. From 1840 to 1866 some 2,500,000 people traveled the valley, engraving into the sod a wide, deep trail. Indians called the route "The Great Medicine Road of the Whites." In 1869 the transcontinental railroad was completed, ending much of the trail travel. Yet even today, the valley with its ribbons of concrete remains the Great Platte River Road to the West.