[Farrout1]

Then it got progressively more detailed over time. I particularly like the logic of the water on the track. 

The top pond / spring only exists because the beavers builds a damn, which goes to a small waterfall, which makes a stream along the track, which goes into a big waterfall, which plunges into a pool, which then goes under a culvert under the track and out into the gorge. The water is ModPodge and clear resin with simple hues of blue, painted underneath those effects.