All around the valley is dotted with the Bosnia and Herzegovina trademark stećci from medieval ages. It is not clear how long human settlements have existed here but research began when Blidinje recently received Nature park status. Traces of Illyrian graves and Roman roads indicate that Blidinje has been settled for at least 2,500 years. The large necropolis at Dugo Polje indicates that the waves of Slavs that came in the 7th century also made this area their home.