The Associated Press is reporting that Egypt’s Antiquities Minister Mamdouh el-Damaty says a scanning project in the Giza pyramids has identified thermal anomalies, including one in the largest pyramid, built by Khufu.
A statement by the ministry said that the first phase of the scanning has shown “a particularly impressive” anomaly located on the Eastern side of the Khufu pyramid.
Egypt detects 'impressive' anomaly in Giza pyramid scans, plans more research: https://t.co/3XqXjplUQg
— The Associated Press (@AP) November 9, 2015
The two weeks-long thermal scanning was carried out during sunrise, as the sun heats the structures from the outside, and then during sunset as the pyramids are cooling down. The speed of the heating and cooling phases was used to uncover hypotheses such as empty areas in the pyramids, internal air currents, or different building materials used.