abstract appearance background bark brown colors colours contours cracks edges gnarled layered layers lines mottled pattern patterned patterns shadows shape shaped shapes soft strips sunlight surface surfaces surfacing texture textured textures tree tree-trunk trunk uneven variations wallpaper wood aged concrete crack cracked cracking damage damaged deteriorated deterioration fluted fluting garden garden-pillar gray grey mini-garden-pillar old pillar pot-pillar rough style varied various angle angles architectural architecture barrier basic brick brick-wall bricks brickwork color colored colour coloured exterior external perspective perspectives smooth solid standard strength variation wall historic