Mysterious ancient tunnel in Jerusalem leaves archaeologists baffled

“A mystery to us” – Archaeologists discover ancient tunnel hewn through the rock in southern Jerusalem, but say the complex’s purpose, age, and origin remain unclear.

By David Rosenberg, World Israel News

A mysterious ancient tunnel hewn through rock for about 50 meters (164 feet) has been discovered near Kibbutz Ramat Rachel in Jerusalem, the Israel Antiquities Authority said on Thursday.

The tunnel was uncovered unexpectedly during archaeological excavations carried out before construction of a new neighborhood planned north of Ramat Rachel.

The project, funded and advanced by the Israel Lands Authority, includes 488 housing units, employment and commercial space, an elementary school and kindergartens across roughly 58 dunams.

“We were excavating in relatively rocky and exposed terrain when suddenly we discovered a natural karstic cavity,” said Dr. Sivan Mizrahi and Zinovi Matskevich, excavation directors on behalf of the Israel Antiquities Authority.

“To our amazement, as the excavation progressed, this cavity developed into a long tunnel. Parts of it are still collapsed, so the tunnel has not yet revealed all of its secrets.”

The entrance to the underground complex was reached by a staircase descending from the surface to a hewn opening leading into the tunnel.

The passage was found filled with soil layers that had built up over hundreds, and possibly thousands, of years.

Excavations at several points inside the tunnel showed it reaches up to 5 meters (16.4 feet) high and about 3 meters (9.8 feet) wide.

“The quarrying was executed meticulously. It is clear that whoever carved this tunnel invested tremendous effort, careful planning, and possessed the capabilities and resources necessary to achieve this goal,” the excavation directors said.

Researchers have not yet determined why the tunnel was created.

One early theory suggested it may have been an ancient water installation designed to reach a spring.

That explanation was ruled out because the tunnel walls were not plastered, no underground water horizons are known in the area, and there were no signs of water accumulation inside the passage, according to the Israel Antiquities Authority.

Archaeologists also considered whether it may have served as an underground agricultural or industrial installation, but said the scale of the work and the lack of comparable sites nearby made that explanation unlikely.

The current assessment is that the tunnel may have been dug to reach a chalk layer that could be used for quarrying building stones or producing lime.

A shaft carved into the ceiling may have been used for ventilation, and quarrying debris was found on the tunnel floor. However, officials said that interpretation also remains uncertain.

Another possibility is that the tunnel was never completed, leaving its purpose unknown.

According to Mizrahi and Matskevich, “The date of the tunnel is also a mystery to us, since not even the smallest find was uncovered that could indicate when it was created.”

“At the same time, the tunnel lies only a few hundred meters, as the crow flies, from two significant ancient sites – a public building from the Iron Age (First Temple period) in the Arnona neighborhood, and Tel Ramat Rachel, where settlement remains dating from the Iron Age through the Islamic period have been documented.”

Israeli archaeologyJerusalemJerusalem archaeologyTunnels