I stroll over to the side of the temple to examine the relief carvings. I find the pharaoh—he’s not hard to spot—wearing the dual crowns of Upper and Lower Egypt. I wonder who among my fellow onlookers knows that there’s something strange about this particular pharaoh. It isn’t his profile or regalia; those are conventional enough. It’s his name, C

realized I had come on the remains of some ancient tribe that had lived in towns or cities, a tribe so long extinct no one remembered they had ever lived.