Archaeologists in Egypt have identified segments of a 64-km-long extinct branch of the river Nile, which they name the Ahramat Branch, running at the foothills of the Western Desert Plateau, where the majority of the ancient Egyptian pyramids lie. Many of the pyramids, dating to the Old and Middle Kingdoms, have causeways that lead to the branch and terminate with Valley Temples which may have acted as river harbors along it in the past. The researchers...