I have had an idea floating around in my head for some time now about how to add "movement' to a waterfall. NO!---- it does NOT involve real water-- :cry: because we all know ( or should) that real water never looks right in a model. I'm thinking along the lines of this: We have probably all seen various advertising signs in bars ,usually for some beer, that has a scene with a "flowing waterfall--- done with lights behind the glass with the waterfall on it--- some I've looked at involved a moving " translucent ribbon" of color that as it moved let different amounts of light shine thru the shading giving a very realistic effect of actual motion to the sign. I would think that some similar trick could be done on a waterfall on a layout --- or even perhaps to a stream or river. What do you guys think --- plausible ?