Ключевые слова: abandoned, abstract, abyss, advance, ascend, background, backlight, backlit, bright, canal, chimney, circular, cylinder, cylindrical, dazzling, deep, descend, dig, dirty, down, drain, effect, end, fall, fallen, glow, gutter, heaven, heavenly, hole, inside, interior, light, light source, long, pipe, pit, probe, shaft, shine, source, texture, textured, through, tube, tunel, tunnel, wall, well, wormhole,