The Source

The historian reaches the southernmost stretches of the Egyptian Nile, though her 900-mile journey is not quite over as she joins archaeologists as they extract a giant stone message board from the foundations of the temple of the crocodile god Sobek. Bettany also visits a hotel once frequented by Churchill and says farewell to her boat crew. After reaching Egypt's border with Sudan where Rameses the Great built an outrageous temple to himself, the presenter joins the crowds to witness the power of the rising sun.