BEGINNING WITH its construction in the fourth century B.C. and continuing for more than 800 years, the Temple of Isis on the small island of Philae, set where the Nile flowed out of Nubia, was visited by a stream of pilgrims. Coming from all parts of the Egyptian empire, and even as far away as Cyprus and Rome, they passed between 60-foot towers to attend elaborate seasonal ceremonies that celebrated Isis’ miraculous resurrection of her husband, the god Osiris, and the birth of their son, Horus. They beseeched Isis, the queen of the Egyptian pantheon, for aid and thanked her for interceding in their affairs.
Before heading home, many also etched their marks—a carving of their footprints on sacred ground, a picture of the deity, a name, a date or…