Babajaga posted:PSU1980 posted:SJC has it correct, put cork bed down to minimize the noise then ballast 6 inches into tunnel or to the point you don't see deep into the tunnel and scenic the tunnel walls and call it a day. No need to waste time or money on that.
K
You can't really see too far in from the one side but on the other side when you're sitting by the controls you can see all the way into the tunnel a decent amount. So it might need a little more covering there.
Well, you sort of skipped the first step of tunnel building- the tunnel. Some use cardboard folded to a U shape upside down. others go to great extent to make it semi-round at the top. Just think of what it looks like after they actually bore, blast and cajole through solid rock.
The floor or track bed is usually just rock. As in, paint is black with gray blended in while it is wet.
There is a heavy brown paper used for walking areas for protection when an interior is under construction. You could crinkle that up and paint it for the interior tunnel walls.
