The Associated Press reports  ”archaeologists digging in Jerusalem have uncovered a 3,700-year-old wall that is the oldest example of massive fortifications ever found in the city,” quoting the Israel Antiquities Authority.

The 26-foot-high wall is believed to have been part of a protected passage built by ancient Canaanites from a hilltop fortress to a nearby spring that was the city’s only water source and vulnerable to marauders. The discovery marks the first time archaeologists have found such massive construction from before the time of Herod, the ruler behind numerous monumental projects in the city 2,000 years ago, and shows that Jerusalem of the Middle Bronze Age had a powerful population capable of complex building projects, said Ronny Reich, director of the excavation and an archaeology professor at the University of Haifa.