 Popovo polje is one of the largest "polje" (karstic plains) in Bosnia and Herzegovina and the world, famous for its karstic phenomenons and features, and particularly the Trebišnjica river, which flows through the polje as the largest sinking river (also "losing stream", or "influent stream") in the world, as well as the Vjetrenica cave system, located to the west/south-western parts of the valley.The Nikolić noble family and Sanković noble family held Popovo polje in the late Middle Ages.The Vojnović noble family hailed from Popovo polje.