The Gihon Spring, Hezekiah's Tunnel, and the Pool of Siloam
Hezekiah's water tunnel in Jerusalem, the Gihon Spring, and the Pool of Siloam.
The Gihon Spring was a primary water source for the ancient city of Jerusalem. When the king of Assyria (Sennacherib) was making war against Judah (Isaiah 36:1), and it was clear that Jersualem would likely be attacked as well, Hezekiah (king of Judah) fortified the city including the spring.
[Archaeology] [Images of selected sites in Jerusalem from Furman Univ.]