The head of Egypt's Supreme Council of Antiquities, Zahi Hawass, said the discovery of the pumice would open a new field of study in Egyptology. "Geologists will help us study how ... natural disasters, such as the Santorini tsunami, affected the Pharaonic period," he said... While noting that layers of ash from Santorini have been found in Egypt's Nile Delta, he told The Associated Press that he thought it more likely the floating pumice was carried to the Sinai by regular ocean currents. The archaeological team found the pumice while excavating at Tel Habuwa in the desert northeast of Qantara,...