Albert Barnes Commentary Nehemiah 2:14

"Then I went on to the fountain gate and to the king`s pool: but there was no place for the beast that was under me to pass." — Nehemiah 2:14 (ASV)

The gate of the fountain - A gate on the eastern side of the Tyropoeon valley, not far from the pool of Siloam (probably “the king’s pool.” Compare Nehemiah 3:15).