The Siloam Inscription describes the moment when two independent teams of diggers met up with each other to complete the 1,750-foot tunnel built by the Judahite King Hezekiah to enable Jerusalem to withstand a siege by the Assyrian ruler Sennacherib. Dug in 701 B.C.E., this marvel of ancient engineering allowed water to flow from the Gihon Spring outside the city to a pool inside the city’s walk. Sennacherib’s siege proved unsuccessful.