Ключевые слова: abstract, aging, background, backgrounds, bark, birch, circle, closeup, concentric, crack, cut, dark, design, detail, drought, dry, earth, ecology, environment, gray, grunge, grungy, history, lignin, line, macro, material, mud, natural, nature, old, old tree, panel, part, pattern, porous, rock, rough, shape, soil, structure, surface, texture, textured, timber, tree, trunk, wood, wooden,