The Serapeum of Saqqara. It was the burial place of the Apis bulls. The most ancient burials found at this site date back to the reign of Amenhotep III. Son of Ramses II, Khaemweset ordered that a tunnel be excavated through one of the mountains, with side chambers designed to contain large granite sarcophagi which held the mummified remains of the bulls. A second tunnel, was excavated under Psamtik I and was later uset by the Ptolemaic dynasty. Saqqara.