track on foam, laminate underlay, and then ballast. If the ballast is stuck with latex rather than PVA it retains some flexibility and the whole trackbed is more resilient.
One of the greatest tools of the model railroader is forced perspective. The illusions you can create with proper scaling and the right angles are seemingly endless, and these illusions can often be essential for a realistic model depending on the scene and space constraints with which you are working. #modeltrainplans