abstract backdrop background barrier colored coloring colors coloured colouring colours contrasting decorative display distinctive divide dividing-fence dried dry fence fences fencing hard joined joins light linked natural ornamental screen screened screening sticks straight strong surface surfaced surfaces surfacing texture textured textures upright variations variety weather- resistant wired wired-together appearance brown conglomerate contours contrast contrasts cracks fissures flaws grit gritty layered layers levels lines rock rock-face rockface rocky rough rugged shade shadows shape shaped shapes stone strata stratum sunlight sunny sunshine veins wallpaper mica silicate