abstract background block brown colored coloring colors coloured colouring colours contours contrast cracks edged edges edging fissures flaws heavy large layered layers levels light lines natural red rock rock-face rockface rough rugged shadow shape shapes solid split stone strata stratum strength sunlight surface surfaces texture textured textures variations wallpaper backdrop barrier contrasting decorative display distinctive divide dividing-fence dried dry fence fences fencing hard joined joins linked ornamental screen screened screening sticks straight strong surfaced surfacing upright variety weather- resistant wired wired-together above acoustic-strips acoustics angles appearance architectural architecture bright ceiling color colorful colour colourful design designed edge geometric geometrical inside interconnected interior interlinked internal lighting lined plastric shaped strips suspended suspension conglomerate contrasts grit gritty rocky shade shadows sunny sunshine veins