Ключевые слова: abstract, age, aging process, background, bark, brown, circle, closeup, color image, cross section, cut, dead, environment, firewood, forest, growth, horizontal, industry, isolated, log, lumber industry, material, nature, no people, oak, old, organic, outdoor, pattern, plant, ring, rough, section, shape, slice, stump, surface, texture, timber, tree, tree stump, tree trunk, trunk, white, wood, wood material, wooden, year,