abstract bark brittle cracked cracks exterior green moss patch pattern surface texture white wood brick close-up colors colours fine cracks grains ingredients rough textures variations asphalt background blue car park crack grunge lines paint parking lot pavement urban dry dry mud earth everglades fango flats Mud parched sediment tierra appearance backdrop broken broken-up brown central-Australia climate dried dried-out drought gaps ground patterned patterns Soil splatter splatter-pattern summer wallpaper weather