Ancient Apocalypse

Season 1 • Episode 6• America's Lost Civilization• ★ 6.8

Graham visits ancient mounds in North America and wonders if they contain astronomical significance — or even warnings of an apocalyptic climate event.

Documentary
1
Once There Was a Flood
11/11/2022
2
Stranger in a Time of Chaos
11/11/2022
3
Sirius Rising
11/11/2022
4
Ghosts of a Drowned World
11/11/2022
5
Legacy of the Sages
11/11/2022
6
America's Lost Civilization
11/11/2022
7
A Fatal Winter
11/11/2022
8
Cataclysm and Rebirth
11/11/2022

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