Use Retaining Walls alone, installed adjacent to each other to create straight or curved walls or use with Tunnel Portals. Cut to varying heights to create stepped, winged walls. Color easily and realistically with Earth Colors Liquid Pigment. Set contains three pieces. 2 5/8" w x 4 13/16" h (6.66 cm x 12.2 cm) each, 57' (17 m) total scale length Meets NMRA specifications What color pigments do you suggest I use on Tunnel Portals and Walls to make them look realistic? The photo of the Single Track Timber Portal, shown on the website is a good example of a realistic Tunnel Portal. We used Burnt Umber for the main color and then applied a wash using a thin solution of Black. You could also use Stone Gray as an accent.
