Fuller’s Field was a place outside Jerusalem. It was near a spring or pool of water. A raised walkway or water channel (called an aqueduct) led to it (2 Kings 18:17; Isaiah 7:3; 36:2). Many scholars think it was close to En-rogel, a spring also called “spring of the fuller.” A fuller was someone who cleaned and prepared cloth, especially wool.
En-rogel was in the Kidron Valley, south of Jerusalem. In Bible times, it marked the border between the tribes of Judah and Benjamin (Joshua 15:7; 18:16). When Absalom rebelled against King David, David ran away from Jerusalem. Two of his helpers stayed at En-rogel to gather news about the rebellion (2 Samuel 17:17).
En-rogel is often identified with a deep well called Bir Attub, or “Job’s Well.” This well reaches down into the rock and brings up water after it rains.