background bark coconut crack fissure natural nature ridge ringed rough surface texture tree abstract aged angles appearance color colors colour colours cracked disused dumped old pole post round surfaces surfacing textured textures wood wooden wooden-pole wooden-post contours cracks edges layered layers lines mottled pattern patterned patterns rocks rocky shadows shape shaped shapes stone stones uneven variations varied various wallpaper contrast gloss glossy leather organic reptile scales shine skin age grain grunge paint weathered asphalt bitumen broken damage damaged damaging danger dangerous dry gravel hole holes pothole potholes risk risky road street tarmac