An antiquities site at Har Adar has been turned into a small archaeological park, based on finds from a salvage excavation conducted in 1991 on behalf of the Staff Officer for Archaeology, Judea and Samaria, directed by M. Dadon. A building complex was uncovered, with two strata, dating from the fifth to the mid-first centuries BCE, revealing a fort from the Persian period and a farmhouse from the Hellenistic period. In the Ottoman period a wing was added to the house. The location of Har Adar was named Radar Hill (, ''Giv'at HaRadar''), for the
World War II British military installation on top of the hill. The Local Jewish military thought that the installation was an anti-air radar for the protection of
Jerusalem. In fact, it was a relay station, to boost the radio signal. The installation was handed over to the Jordanian
Arab Legion on May 10, 1948, prior to the second phase of the
1948 Arab-Israeli War. • 456 dunams from
Beit Surik, • 36 dunams from
Qatanna. On the morning of 26 September 2017, a Palestinian gunman
opened fire at the checkpoint in the
separation barrier at the rear of the settlement, killing one Border Police officer and two security guards, while wounding a fourth. ==Demographics==