English: The Gihon Spring (Hebrew: מעיין הגיחון‎) or Fountain of the Virgin in the Kidron Valley was the main source of water for the Pool of Siloam in the City of David, the original site of Jerusalem. One of the world's major intermittent springs—and a reliable water source that made human settlement possible in ancient Jerusalem—the spring was not only used for drinking water, but also initially for irrigation of gardens in the adjacent Kidron Valley which provided a food source for the ancient settlement.