Naḥal Sorek, also Soreq, is one of the largest, most important drainage basins in the Judean Hills. It is mentioned in the Book of Judges 16:4 of the Bible as the border between the ancient Philistines and the Tribe of Dan of the ancient Israelites. It is known in Arabic as Wadi es-Sarār, sometimes spelled Surar, and by various names along different segments, such as Wadi Qalunya near Motza, Wadi al-Tahuna, and Nahr Rubin further downstream.

The Judaean Mountains, or Judaean Hills or the Hebron Mountains, are a mountain range in Israel and the West Bank where Jerusalem, Hebron and several other biblical cities are located. The mountains reach a height of 1,026 metres (3,366 ft). The Judean Mountains can be divided into a number of sub-regions, including the Mount Hebron ridge, the Jerusalem ridge and the Judean slopes.