On the east the valley of the Kidron separates this plateau from the ridge of the Mount of Olives, which is 100 to 200 ft.
higher, while the Wadi Er Rababi bounds Jerusalem on the west and south, meeting the Valley of Kidron near the lower pool of Siloam.
of the Damascus gate, followed a course first south-east and then west of south, and joined the two main valleys of Kidron and Er Rababi at Siloam.
Another shorter valley began near the present Jaffa gate and, taking an easterly direction, joined the Tyropoeon; while a third ravine passed across what is now the northern part of the Haram enclosure and fell into the valley of the Kidron.
In ancient times a brook flowed down the valley of the Kidron, and it is possible that a stream flowed also through the Tyropoeon valley.