From publisher blurb: Create BattleMaps of any size Derelict Alien Starship, using up to twenty geomorphic maps including Corridors, Bridges, Engine Rooms, Crew Pods, and many other map sections. Sample assembly derelicts included. Using this universal system you can create anything from small derelict ships to gigantic abandonded space stations! Scale: 1-inch square = 5 feet Includes: 20 battlemap secctions Sample derelict map layouts