sentences:  Kostyonki–Borshchyovo archaeological complex
  
  The Kostyonki–Borshchyovo archaeological complex is an extended Upper Paleolithic (Aurignacian to Gravettian) site, covering 30 km2
  in the area of Kostyonki (also Kostenki) and Borshchyovo (also Borshchevo) on the western middle bank of the Don River in Khokholsky District, Voronezh Oblast, Russia, some 25 km south of the city of Voronezh.It is divided into sites Kostenki-1–21 and Borshchevo-1–5, which are in turn divided into 10 stratigraphical layers.