Ключевые слова: architecture, channel, collector, concrete, corridor, danger, dark, decay, dirty, drain, drainage, ecology, end, escape, exit, exploration, exploring, flowing, geometric, glow, hope, industrial, inside, leaving, light, mud, passage, pipe, pipeline, pollution, rectangular, reflection, river, rotting, sewage, sewer, sewerage, stream, subterranean, town, tube, tubing, tunnel, turn, underground, waste, wastewater, water, way,