"Try to imagine how life would change if your water supply suddenly vanished."
In 1967 photographer Tor Eigeland visited the marshes of southern Iraq. The resulting photographs of this now vanished landscape and way of life have been mostly unseen until now. I write about his pictures and visit for National Geographic Proof. Eigeland's pictures and recollections of the trip have been published in a new book called "When All the Lands Were Sea."