Massive stone tables called dolmen dot the fields throughout the Golan. Built of basalt stabs, these strange structures are tombs—some as large as 10 feet high and 20 feet wide—probably the work of nomadic or seminomadic tribesmen. No remains of contemporaneous houses have been found associated with them. Based on the earliest artifacts found in some of the hundreds of Golan dolmens, they are dated to about 2200–2000 B.C.