background barrier brown cemented coloring colors colouring colours concrete constructed heritage historic local-stone old pattern patterns perspective perspectives picturesque random randomly-coursed retaining-wall rock rocks rough rural secure security shape shapes significant solid stone stone-walled stones stonework strength strong stucco surface surfaces texture textures traditional uneven variations variety wall well-built abstract backdrop close-up closeup color decoration detail grunge grungy hard macro material Mineral natural nature pebble rubble structure tile angles bolders boulders coated cover covered erosion-prevention fitted hill mortar Rendered retaining-rocks rocky rugged slope sloping walled 3D asbestos blue cement construction dark decay design exterior grainy graphic gray grey plaster scrapbooking urban weathered coarse colourful decorative green metallic orange purple red light pastel cannon capital castle city cliff cloud clouds cloudy defence defences defense defenses Edinburgh flag flower flowers fort fortress garrison precipice rampart scotland sky soldier sun tree trees walls white Dirt sepia