Jumping back into hobby after many year Hiatus, Really enjoy the advancements that have been made over the last 25+ years.
Having a great time working with RMP and have most of the functionality down but cannot for the life of me figure out how to add elevation to layout but not the track. See attached 3x4 N Scale Layout I am finalizing at the moment.
In the upper right corner I see a scene of a gradually sloping upward hill but the railroad decided to go through though the hill and not in a tunnel as it is not high enough.

How can I represent this in Rail Modeller Pro. Happy to have a reference to the User Manual as mazbe it is in a section that I missed.
Thanks
Erik