CAIRO, Egypt - Egypt's antiquities chief on Thursday revealed a 2,500-year-old hidden tomb under the shadow of one of Giza's three giant pyramids, containing 400 pinkie-finger-sized statues and six coffin-sized niches carved into granite rock. Zahi Hawass, the director of Egypt's Supreme Council of Antiquities, said archaeologists had been working for three months to clear sand from a granite shaft found between the pyramid of Khafre — also known by its Greek name of Chephren — Giza's second-largest tomb of a pharaoh, and the Sphinx. Under blaring sun Thursday, Hawass said Giza's latest ancient discovery came to light after archaeologists...