Relentless demons, writhing serpents, the lake of fire and final judgment from the god Osiris. Ancient Egyptians believed that these and other terrifying obstacles challenged their pharaohs in the afterlife. The hieroglyphs in the tomb of Pharaoh Seti I most clearly illustrate the 12 perilous gates a dead king had to navigate to achieve resurrection. Enter Seti's tomb with National Geographic Explorer-in-Residence Dr. Zahi Hawass as he traces this king's arduous journey through the netherworld.

• Zahi Hawass
• Mark Halliley