background cracked crystalline granitic gray grey hard natural nature rock rough stone texture ancient architecture elements historical mortar old security tower turret wall brick broken cement concrete grey.gray grunge render art arts blank colour colours copyspace crafts desktop overlay paint painting paper papier pastels scrapbook slide wallpaper abstract backdrop blend blends canvas curves gradient pastel soft stroke strokes textures blocks feature non-slip path paving safety slabs steps. circles white bark coconut crack fissure ridge ringed surface tree aged arrow direction graphic grungy isolated label string tag tied UP vintage apart course decay falling Mud rot rotten stucco brown copy dark ground retro silhouette space