The expedition to Hazor in the mid-1950s under Yigal Yadin was the most important archaeological excavation undertaken by Israel in its early years of statehood. It is the largest archaeological site in northern Israel, featuring an upper tell of 30 acres and a lower city of more than 175 acres.In 2005, the remains of Hazor were designated a World Heritage Site by UNESCO as part of the Biblical Tels - Megiddo, Hazor, Beer Sheba. Yigael Yadin, one of the earliest archaeologists to work on the site, saw certain features as clearly being Omride; Megiddo, Gezer, and Hazor, all feature deep rock cut pits, from the base of which were rock cut tunnels leading to a well that reached the water table, as water-supply systems, which Yadin attributed to the rule of Ahab; Yadin also attributed to Ahab a citadel, measuring 25 x 21 m, with two-meter thick walls, which was erected in the western part of Hazor. However, Yadin's dating was based on the assumption that the layer connected with the gates and administration buildings were built by Solomon. The chief architetect of the excavation was Dunayevsky and his drawings decorate this book. + 365 plates