when was hezekiah's tunnel discovered?
Hezekiahâs Tunnel In 1838, biblical scholar Edward Robinson discovered a tunnel that connected the Gihon Spring, outside of Jerusalemâs walls to the Siloam Pool within its walls. The tunnel was cut out through bedrock, S - shaped with a length of 1,750 feet (1/3 of a mile), and with a slope of 0.6% which brought fresh water to inhabitants within the walls of Jerusalem. Three biblical references explain the purpose and reason for the tunnel: Now the rest of the acts of Hezekiah and all his might, and how he made the pool