Been playing around with this for a couple of weeks now and just got found the hill / mountain creator! My problem is trying to get a near vertical face so as to accommodate a tunnel without it leaving gaps behind it or having part of the hill overlapping the track? Also how do i revert the modified section back to flat again without using the undo function? I have tried changing the settings (circle,square, horizontal, vertical) but this seem to have little effect if any. Any help would be greatly appreciated