 The site is protected by the Republic of Serbia, as a Monument of Culture of Exceptional Importance, but is nevertheless threatened by the Drina river on one side and the continued expanding of the town of Perućac, on the other.Stećaks was inscribed as a UNESCO World Heritage Site in 2016, of which 3 sites are located in Serbia, Mramorje being one of them.The Necropolis, with about 200 tombstones made of solid limestone, was established in the fourteenth century.