 It consist of major mountains of Dinaric Alps range, plateau Dugopolje, Blidinje Lake, Grabovica valley and other characteristic karstic features.The melting glaciers from Čvrsnica during the two past ice ages created this open and barren valley.A spacious plateau, 3–5 km long, is situated at an elevation of 1.150-1.300 meters a.s.l., between Čvrsnica and Vran mountains with a total area of 364 km².