American Egyptologist Kent Weeks talks about his discovery of the largest tombs ever found in Egypt. It's called KV5 and is the burial ground for the sons of the Pharaoh Ramses the Second who many scholars believe ruled during the Jewish exodus from Egypt. Weeks and his team have discovered more than 150 corridors and chambers buried deep below the hills in the Valley of the Kings. He hopes it will be open to tourists in ten years. He has written about his 1995 discovery and the excavation in his new book "The Lost Tomb" (Morrow).