Ключевые слова: 3d, abandoned, abstract, background, circle, concept, construction, corridor, dark, deep, dirty, duct, funnel, grey, grunge, hole, illustration, industrial, inside, iron, light, material, metal, metallic, motion, old, perspective, pipe, pipeline, plate, portal, rendering, round, rust, rusty, sewer, sheet, shiny, stainless, steel, surface, texture, textured, tube, tunnel, urban, ventilation, vortex, wall, way,