From the album Digging up new theories

CAIRO EGYPT - January 20: An employee of the antiquities ministry points out where the causeway starts leading up to one of the pyramids at the Saqqarah, Egypt on January 20. It is believed that a branch the Nile used to run up to the edge of the causeway, allowing for easier transportation of material from around the kingdom.

(David Degner / Getty Reportage)