When Sennacherib of Assyria besieged Jerusalem in 701 BC, King Hezekiah cut a tunnel through 1,750 feet of solid limestone bedrock to bring the Gihon Spring water inside the city walls. The tunnel still functions today; visitors can wade through it. A 9th-century BC Hebrew inscription found inside (the Siloam Inscription) records the moment the two crews — digging from opposite ends — met in the middle.
Why this matters
Direct physical confirmation of 2 Kings 20:20 and 2 Chronicles 32:30. The Siloam Inscription is among the oldest surviving examples of Hebrew writing, dated to Hezekiah's reign by paleography.
Scripture references
2 Kings 20:202 Chronicles 32:30Isaiah 22:9-11
Location
Jerusalem, City of David