Ключевые слова: abstract, aging, background, bark, big, brown, cellulose, circle, color, concentric, cross, cut, dirty, dry, forest, green, history, industry, life, light, line, log, lumber, material, natural, nature, oak, old, organic, part, pattern, pine, plant, redwood, section, structure, stump, sun, surface, termites, texture, textured, timber, tracery, tree, trunk, weathered, wood, wooden, yellow,