old and decayed sandstone wall texture

backdrop background beflecken beton block breache break breakage brick wall bricks brickwork brickworks brown bruch building cement cliff cobblestone pavement color colour composite material concrete crack decay decline detail deterioration elemental elements fels fleck flecken fraction fracture fraktur gray grey grunge old pattern point raw rock rocks rough sand sandstone screensaver spot stain stains stone textures washed weathered decayed texture uneven surface