Thanks very much for your reply. I am really just trying to get used to surveyor and wanted to see if there was anything easier than elevations from scratch. Transdem looks like it will be the answer, but I may wait for a bit and get it once I am a bit more proficient with surveyor.
Yup... The alternative to HOG and TransDEM for what you want to do is displacement maps since TransDEM is quite complex, but it is the bees' knees when you use it.
In Surveyor click on the Topology tool - the one where you sculpt land.
Click on Advanced and you will see a blank window and "none" below that.
Move the arrow, or click on the word none and the list will display, or change to the next on.
Pick one that you may want to use...
Select an area, or even multiple baseboards, which can be done by zooming way out in T:ANE. In previous versions this was a painful process...
Once selected click on the Fill button - it looks like a beaker with liquid dumped into it.
When done click the X.
If you don't like it, click the Undo (arrow) and try again.
If you want to adjust the height, turn the threshold dial and see what it does.
You can create your own displacement maps by cloning old ones and replacing the images with one of your own. All you do is name things the same in the clone so the program isn't confused. We can get there at another point. Anyway, with the displaced landscape, you can then add trees, buildings, track, etc., and by the time you're done no one will know...
These two views of my "big" route are 100% displacement map.