Ключевые слова: architecture, background, brick, bright, cave, channel, concept, concrete, corridor, dark, decay, deep, digger, dirty, ecology, empty, escape, flowing, glow, hole, illuminated, industrial, inside, light, metro, moscow, mystery, passage, path, perspective, pipe, pipeline, pollution, rat, river, round, sewage, sewer, sewerage, space, stream, structure, subterranean, tube, tunnel, underground, urban, view, wall, water,