Unless its a large yard, town or port area most of my current route which equates to about 100 miles long by some 30 miles wide is no more than two baseboards wide. I start by using the terrain slope tool to create a gentle slope from the centre of the two boards out to the edges effectively creating a long trough down the centre, rising to perhaps 70-80 units high at the edges to containing the scenery. I them meander the track down the centre of the boards raised 10-15 units which enable me to contour the terrain around the track both below and above this artificial track level. I then include platforms for any stations, roads and rivers/water and associated bridges. Then start the detailed work, working on between 5-10 baseboard length of route at one time. Include buildings, fences/hedges etc, textures, grass, trees and so forth and populating the stations as I get to them. As more assets are introduced the terrain can be further developed to accommodate them but remember detail gets less the further away from the track the scenery is. As in the real world the flatter the terrain the further you and see but equally fields become larger, hedges and roads straighter and longer, and unless its a built up area generally the infrastructure is more sparse and equally more difficult to see due to the nature that anything close to the track shield what is behind it and so on. In hilly terrain a best you can generally see is partly round the hill in front of you but seldom over it so why build much further than you can actually see unless you are going to include flying aircraft which perhaps is a much larger challenge from a scenery perspective. Peter