Ключевые слова: abstract, air, background, black, blue, circle, concept, construction, corrugated, dark, darkness, death, design, dirty, duct, end, escape, exit, freedom, hole, industrial, industry, inside, iron, light, magic, metal, mystery, old, pattern, pipe, pipeline, pipes, round, shiny, smoke stack, smokestack, space, spiral, steel, technology, texture, tower, tube, tunnel, underground, view, way,