Season 1

01 Once There Was a Flood
31mGraham visits Gunung Padang, an Indonesian archeological site, to find proof of a lost civilization — and the potential cataclysm that wiped it out.
2022-11-11 6.9
02 Stranger in a Time of Chaos
33mIn Cholula, Mexico's oldest continuously-inhabited city, the journalist inspects the world's largest pyramid for signs of a forgotten past.
2022-11-11 7.0
03 Sirius Rising
31mGraham discovers a fascinating pattern that may connect the spectacular megalithic temples of Malta, which he believes to be much older than reported.
2022-11-11 6.7
04 Ghosts of a Drowned World
30mFew scholars have investigated the Bimini rock formation off the coast of Miami, once fabled to be the road to Atlantis — but Graham dives right in.
2022-11-11 6.5
05 Legacy of the Sages
32mAt Göbekli Tepe, the oldest known megalith in the world, Graham questions if simple hunter-gatherers alone could have built such an advanced structure.
2022-11-11 6.5
06 America's Lost Civilization
33mGraham visits ancient mounds in North America and wonders if they contain astronomical significance — or even warnings of an apocalyptic climate event.
2022-11-11 6.8
07 A Fatal Winter
29mThe author returns to Turkey to explore Derinkuyu, an ancient underground city and survival bunker that could shelter thousands in times of crisis.
2022-11-11 6.8
08 Cataclysm and Rebirth
32mIn the ancient geological sites of North America, Graham envisions an apocalyptic event that may have changed the Earth — and its inhabitants — forever.
2022-11-11 6.8


