Ключевые слова: architecture, channel, collector, concept, concrete, construction, corridor, danger, dark, death, deep, dirty, drain, drainage, draining, ecology, environment, escape, factory, flow, flowing, hole, industrial, industry, inside, mud, mystery, passage, pipe, pipeline, poison, pollution, reflection, river, sewage, sewer, sewerage, space, stink, stream, subterranean, toxic, tube, tunnel, underground, urban, voronezh, waste, wastewater, water,