Concrete Retaining Walls from Plywood and Styrene

I completed the retaining walls on the lower level of the 2x4 foot N scale layout and have a new video up on how I built them. These retaining walls are not just there to serve as a transition from the lower to the middle level, but also act to hide the joint between the lower and middle level and the plywood edge of the middle level base.

You can watch the full video below.