Please note again the variety in stones and hues, but also the use of a large stone with arrow slit as a niche.
This system isfun, with each addition the gaming possibilities grow instantly.
I am still working on a crossing between a wide and a narrow corridor, and some narrow side corridors
Some modules with a short dead end side corridor are also under construction..
I admit that they look a bit puzzling when not in use, but once they are in place, as you can see on the right, they do the job.
The upper part was added to give the doorways more stability, since they are now resting on the tops of the walls, but also because the structure would be too weak for frequent handling.