Close up view of brown tree bark with moss and fungus for background texture. The surface of the bark as abstract background. Green Moss growing on the bark of the old tree. tree, bark, close, up, moss, texture, trunk, forest, background, wood, nature, pine, natural, oak, plant, green, macro, old, skin, material, yellow, design, abstract, color, pattern, white, brown, outdoor, outdoors, close-up, line, park, organic, branch, surface, cover, weathered, isolated, spring, beautiful, birch, summer, light