The Gihon Spring was the main source of the water for the Pool of Siloam in Jerusalem and is mentioned in the Bible.
Some archaeologists assumed that a stone tower built to guard the water system hailed from circa 1700 BC.
However, Elisabetta Boaretto and colleagues recently carbon dated the remains of charcoal, seeds and bones found in the sediments and found out that precious studies had overlooked half a metre of sediment, representing hundreds of years.
This means that the tower was erected a lot later, between 900 BC and 800 BC, during the time of King David’s descendants, just like the Old Testament tells us.
The previous date was based on pottery and other artefacts.