abstract architectural backdrop background barrier brick brick-wall bricks brickwork cement colored coloring colors coloured colouring colours constructed exterior external firm linear lines mortar perspective perspectives secure security smooth solid standard strength strong style surface surfaced surfaces texture textured textures traditional-brick-wall variation varied various wall walled wallpaper well-built bark bumps close-up contrast cracked cracks curled curling curls dark dry edge edges gnarled gray grey grooves layers light mottled peeling ridges rough shade shadows shapes strips sunlight tree tree-trunk trunk uneven variations wood wrinkled wrinkles wrinkly bare bush contours dead exposed grooved outdoors soft Stump swirls tree-stump twisted twisting architecture bedrock formation heritage historic Historic site kiln kilns landscape lime-kilns park patched patchwork repairs rock rock-work rocks rubble ruins stairs steps stone stone-steps stone-wall stone-work stones structure surfacing trees vegetation walls arch brick-walls historic-site archway