New discoveries at the lost city of Jericho offer fresh evidence about the biblical battle that brought its impregnable walls down; using the latest tech, experts might reveal if Joshua and the Israelites really conquered this ancient city and how.

New discoveries might finally reveal the location of Atlantis, the long-lost civilization that's said to have sunk into the sea; exclusive access to cutting-edge archaeological investigations unearths fresh evidence for experts on this millennia-old mystery. This is a mashup of S03E05 "Hunt for the Real Atlantis" and S07E06 "Lost World of Atlantis."