abstract appearance Australian background bare bark brown colors colours cracked cracks dry edge edges eucalypt eucalypts gray grey grooves layers lines mottled peeling rough self-shedding shadows shapes shedding smooth sunlight surface texture textured textures tree tree trunk trunk uneven variations wallpaper wood Bodium brick castle history kent moat stone sun trees view water bush geothermal leaves new zealand plants Rotorua steam thermal Waiotapu bridge bridges Hawaii Kauai rivers swinging bridge waimea waimea river blue carved granite green mountain pine trees presidents sky blue sky gazebo greeneries outdoor park pond public park