Deep beneath the desert plateau of Saqqara, a row of colossal stone boxes has become a lightning rod for anyone convinced that ancient Egypt once wielded a level of technology we no longer understand.

Ancient Egyptian artifacts like massive granite boxes, statues, and stone vessels display levels of precision—perfect ...

Egypt's antiquities chief announced a project to restore an ancient pyramid's granite cladding. He called it "Egypt's gift to the world," gesturing to work apparently already begun. But some heritage ...