Lake County Directory: Source for Mission Mountains, Flathead Lake, and the Flathead Reservation.LumiVista Bed and Breakfast: Located in the foothills of the Mission Mountains minutes away from Flathead Lake and close to Glacier National Park.Mission Valley Animal Shelter: Privately funded shelter located in Lake County. Pictures of available pets, dog and cat adoption forms, foster-to-adopt program information, & spay and neuter assistance.