Ключевые слова: abstract, air, backdrop, background, bars, chrome, city, closeup, construction, cover, dirty, drain, floor, grate, grid, grille, ground, grunge, grungy, guard, holes, iron, lines, manhole, metal, metallic, old, pattern, perspective, plate, prison, reflection, rough, rusty, seamless, sewer, sidewalk, steel, strong, subway, surface, textured, urban, vent, walkway,