sentences:  Lookout Pass is considered the eastern boundary of Idaho's Silver Valley mining region.Opened in 1935, the Lookout Pass ski area operates under a special-use permit of the U.S. Forest Service, in the Idaho Panhandle National Forests (formerly the "Coeur d'Alene National Forest").Gradual enhancement of the area has occurred over the decades, and the first chairlift was installed in the summer of 1982.