Jamieson, Fausset & Brown, on Neh 2:13

“And I went out by night by the gate of the valley, and before the dragon fountain, and to the dung gate, and I viewed the wall of Jerusalem which was broken down, and the gates thereof which were consumed with fire.”

“I went out by night by the gate of the valley--that is, the Jaffa gate, near the tower of Hippicus. even before the dragon well--that is, fountain on the opposite side of the valley. and to the dung port--the gate on the east of the city, through which there ran a common sewer to the brook Kedron and the valley of Hinnom.”

Imported from an open dataset — not yet checked against the printed edition.