Hey Skuzzy,
I'm wondering if it's possible to make a custom object that you could use to insert into the game (MA terrain use hopefully). I was hoping to bring the tunnels back into AH and was planning on doing so by editing a "hill" object. That way the object is randomly set on the terrain along with the tunnel inside. Afterwards I was hoping on sending you the scale model of the tunnel to see what you think and if it is possible to enter into AH.
I haven't started on anything wanting to know if it would be possible first.