BlackSheepSystems - Trench prototype run

This is the first run of using the system to build (what identifies as) trenches. You build low square blocks, with 4 half pillars, a floor piece on the top and then you add half walls to the sides wish will stay visible. You build high square blocks, with 4 pillars, a floor piece on the top and then you add trench walls or 1st floor wall to the sides wish stay visible. This set needs to be used with the 'BlackSheepSystem' base pieces. This is mearly a prototype run, due other then described above the modularity is restricted to square boxes. And I want to get more out of it, so thats why I'm starting over. I also added some test pieces of combi walls, base wall and floortiles, as an extra, for those who could use them.