Ключевые слова: abstract, arbor, backgrounds, bark, branch, brown, circle, closeup, concentric, cracked, cross, cut, cutting, dead, disease, effect, environment, falling, forest, fracture, grass, green, log, material, nature, old, outdoors, park, pattern, people, plant, poplar, rough, section, still, stump, textured, thick, tied, timber, tree, trunk, weakness, wood, years,