sentences:  Several other trails are nearby for further exploration; one of these follows the old road along the North Fork of the St. Joe River to Avery and has an improved campground at its start.Another nearby rail trail is the Trail of the Coeur d'Alenes; from Mullan it travels over westbound, descending the Coeur d'Alene River through Silver Valley and crossing Lake Coeur d'Alene.It follows the former right-of-way of the Union Pacific Railroad.