Greatest Lost Cities
- Episode aired Sep 28, 2020
Experts investigate the secrets of seven lost cities; investigators use advanced aerial scanning, underwater drones, and 3-D mapping to reveal why these enigmatic civilizations disappeared.Experts investigate the secrets of seven lost cities; investigators use advanced aerial scanning, underwater drones, and 3-D mapping to reveal why these enigmatic civilizations disappeared.Experts investigate the secrets of seven lost cities; investigators use advanced aerial scanning, underwater drones, and 3-D mapping to reveal why these enigmatic civilizations disappeared.