abstract appearance Australian background bare bark brown close-up colors colours cracked cracks dry edge edges eucalypt eucalypts gray grey grooves layers lines mosaic mottled natural nature patterns peeling rough self-shedding shadows shapes shedding smooth sunlight surface surfaces texture textured textures tree tree-trunk trunk uneven variations wallpaper wood bumps contrast curled curling curls dark gnarled light perspectives ridges shade strips surfaced wrinkled wrinkles wrinkly bush contours dead exposed grooved outdoors soft Stump swirls tree-stump twisted twisting cut-branches eyes grain knots knotted lumber patterned radial-lines shape shaped timber unusual varieties backgrounds moss shades of colour Tree Stump tree trunk shades-of-colour amber apple arong autumn backdrope biological biology blossom botanical botony change changes changing cherry chlorophil CO2 color colorful colour colourful deciduous drying dying fall fallen floral foliage forest forests golden leaf leaves macro November october oxygen pattern plant plum red rustic rusty sap season seasonal September stoma tranquil trees turning variegated vein veins vibrant vivid weirdvis woods woody