Battery and NCE DCC power. Outdoor loop to loop railroad single track mainline, with 4 passing sidings. Northern Division 350' climbs at 2% grade to Summit at top of berm. Three tunnels total 90' with 50' river and pond. Southern Division is 100' long industrial loop. Ten track classification yard between with large turntable, scratch built 7 stall roundhouse, complete engine facili-ties. Built for operations.