The tunnel 27 portal and liner is a remnant still standing on the Donner Pass after a partial daylighting of the tunnel. The mainline still passes through the portal. This custom model was created from photos and SP engineering drawings. Painted and weathered by the client, it was delivered built-up with a coat of primer. The portal was 3D printed in resin and the liner extension is printed in PLA. Joints were filled with the same resin used in the print. Photos submitted by client and posted with permission.