- Items fog with distance. Try to make trees near center of layout more drag colors to give the illusion of greater distance. - Snow patch high in mountain pass? - Train wrecks - car lost over the side of the mountain (include debris in trees) - after the wreckage: deep wheel marks in mud, broken trees, small bits of cars left lying around - Use frame of wooden flatcar as a bridge? - fossiles in a fresh landslide? Making mountains using window screen and expanding foam: http://mrhpub.com/2015-11-nov/port/ (Creating the "Ozark mountains")