Kariz, Iran, on the island of Kish in the Persian Gulf - The Kish ghanat (qanat) is an underground system more than 2,500 years old, 52 feet below the surface with ceilings that are 26 feet high; the ghanat is an ancient system found in arid regions that brings groundwater from the mountains, following an aquifer, and emerge at an oasis, through a series of tunnels.
