Found at last: long-lost branch of the Nile

The remains of an ancient branch of the Nile River has been found near the Giza pyramid complex in Egypt — hinting at why so many were built there. The pyramids there are now many kilometres away from the Nile. Satellite images and geological data now confirm that a tributary of the river — which researchers have named the Ahramat Branch — used to run nearby several thousand years ago. The waterway would have provided a convenient way to transport materials to the sites.