These small 18-19th century pig iron furnaces took coal or charcoal and crushed iron ore and with forced air smelted it into pig iron poured into a bed of sand. They are not large as you can see, and could be easily "compressed" in scale to make a fabulous railroad industry. I think a tealight's flickering led could be repurposed in the furnace to give a pleasing flicker. the main furnace chimney simulated with styrofoam, and a bit of wood and paper construction would do fine for the shed like building. some figures working, and a stack of pig iron by the tracks would make it complete
So, light brown is raised, Dark brown is mountain, blue is creek, pink is structures. green is flat. Theres a nice big tunnel, two industries, two platforms, a reverse loop, a mainline track, all done with O27 Marx 3 rail track and manual turnouts. kinda pleased with it...was not easy getting things to come together in 4x8. two places I have to hacksaw a length of straight track...reasonable. also it's designed to start with one loop and grow.
