Ключевые слова: abstract, background, bright, channel, circle, concept, concrete, corridor, creepy, culvert, dark, deep, design, dirty, drain, drainage, dried, element, empty, environment, exit, flow, geology, grunge, industrial, inside, light, mine, old, perspective, plant, pollution, sewage, sewer, sewerage, shine, space, stone, storm, storm drain, subterranean, texture, tunnel, underground, urban, view, wall, waste, wastewater, water,