Dear Developers. In the world editor, In the terrain menu. There is one menu item.... smooth heightmap. This works great! I think adding these extra options would be very useful.... • Add noise to heightmap via texture mask (....to add rocky areas in parts of the map very quickly) • Smooth heightmap via texture mask (....to smooth only roads/beaches very quickly) • Convert sketchup DAE to heightmap (...to convert a basic terrain from sketchup to a heightmap) Currently I am using ARTCAM software (at my work) to do all of the above. There is a sketchup plugin that converts a model to a heightmap but it takes about an hour to run. Artcam somehow does the same thing in about 5 seconds. Thankyou for such an awesome game/sim!