Made of boulders weighing 4 to 5 tons , the 3,700-year-old wall is 26 feet high . Archaeologist : `` I do n't know how to do it today without mechanical equipment '' ' The Wall was built by a people who were not only very skilled in building walls but also knew how to use them as battering rams and defensive structures. Wall is believed to have been built by Canaanites .
Made of boulders weighing 4 to 5 tons , the 3,700-year-old wall is 26 feet high . Archaeologist : `` I do n't know how to do it today without mechanical equipment '' The wall appears to have been used to defend path that led to spring . Wall is believed to have been built by Canaanites .