The Nabataens built it in order to protect the city from frequent floods. This clever piece of infrastucture was renovated in 1964.
More information at Petra Tourism Site http://www.visitpetra.jo/Petra/HistoricLocationDetails.aspx?lid=21
Address (Unnamed Road), Jordan
Coordinates 30°19'18.695" N 35°27'40.872" E
