And an idea had come. Let's make an HQ post. But available an Observation Post too.
Quickly searched the old Italeri Walls & Ruins set, and I started planning. Mixed some soil, water and PVA.
Unfortunetaly forget the cardboard and the water don't like each other, so all of that stuck on a plastic sheet.
Next step mix more soil, to finish around the walls, then paint, and stick some grass.