Paired Tunnel Portals
#1
In 'Ronville', located somewhere in the CO Rocky Mountains, the narrow gauge Trim Creek & Western RR meets a standard gauge line (loosely based on the D&RGW). At the Western end of the railroad yard both lines disappear into a nearly vertical rock wall of the 'Mineral Ridge'. The SG line enters a helix leading down to a staging yard, while the TC&W starts the climb up towards the narrow gauge terminal, 'Trim Creek'.

My layout is divided by a roughly diagonal backdrop into two parts - a mountain section with the NG terminal and the flat Ronville section. Those two lines mentioned above leave the flat section in a corner of the layout. The situation is shown on the track plan below. And the photo shows the finished portals.


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Boss of the Trim Creek & Western RR (H0 & H0n3)
Running through the hard-shell mountains, not around them!
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