The mummified remains of Amenhotep I, who ruled Egypt from around 1525 to 1504 BC, were unearthed over two centuries ago, in1881. But the pharaoh's sarcophagus, exquisitely dressed in linens and an ornate lifelike facemask, was left untouched for fear of damaging his fragile body. Now, researchers have used three-dimensional computerized tomography (CT) to peek through the layers and obtain invaluable information about the ancient king who lived over 3,500 years ago.