New excavations are revealing more than we've ever known about what the Egyptians knew they'd encounter on their afterlife journey. Today, Dr. Zahi Hawass is excavating a mysterious tunnel at the very bottom of Seti's tomb, a perilous tunnel dug far below the surface of the Earth. On a true Indiana Jones-style quest, Dr. Hawass will put his own life in jeopardy for the sake of discovery.

Originally broadcast on the National Geographic Channel.