Nehemiah 2:15

Then went I up in the night by the brook, and viewed the wall, and turned back, and entered by the gate of the valley, and so returned.

Then went I up ... by the brook - i:e., Kidron.

And entered by the gate of the valley, and so returned. The gate leading to the valley of Jehoshaphat, east of the city. He went out by this gate, and having made the circuit of the city, went in by it again (Barclay's 'City or the Great King').