In July 1970, one of the largest dams in the world - the Aswan High Dam in Egypt - was completed. It had taken ten years to build, and was not without controversy. Louise Hidalgo brings us voices from the archives and from one man who was there, Professor Herman Bell, about the cost of the dam to the region's people and its antiquities.
This programme is a rebroadcast.
(Photo: The Aswan High Dam under construction in southern Egypt in the 1960s. Credit: AFP)