Join Stacy Keach as he investigates the world's most intriguing lost cities, bizarre formations, and sacred sites. This series features all original footage, filmed on location throughout the world.
Here is the incredible story of Teotihuacan, and how 200,000 of its inhabitants "vanished" around the year 750 A.D. We explore the mesmerizing ruins and latest underground discoveries.
S1E9 22 min