Seasons & Episodes
Once There Was a Flood
Graham visits Gunung Padang, an Indonesian archeological site, to find proof of a lost civilization — and the potentia
Stranger in a Time of Chaos
In Cholula, Mexico's oldest continuously-inhabited city, the journalist inspects the world's largest pyramid for signs o
Sirius Rising
Graham discovers a fascinating pattern that may connect the spectacular megalithic temples of Malta, which he believes t
Ghosts of a Drowned World
Few scholars have investigated the Bimini rock formation off the coast of Miami, once fabled to be the road to Atlantis
Legacy of the Sages
At Göbekli Tepe, the oldest known megalith in the world, Graham questions if simple hunter-gatherers alone could have b
America's Lost Civilization
Graham visits ancient mounds in North America and wonders if they contain astronomical significance — or even warnings
A Fatal Winter
The author returns to Turkey to explore Derinkuyu, an ancient underground city and survival bunker that could shelter th
Cataclysm and Rebirth
In the ancient geological sites of North America, Graham envisions an apocalyptic event that may have changed the Earth
Chapter I
From ancient footprints to mysterious earthworks, Graham continues his journey into the past alongside experts and curio
Chapter II
Graham searches for answers to the questions behind ancient works of art, including 25,000-year-old Amazonian paintings
Chapter III
Accompanied by local experts, Graham compares ancient oral traditions and learns Sacsayhuamán in Peru may be older than
Chapter IV
Graham learns of a stone-shaping technique now lost to history, and explores how ancient Amazonians managed to thrive in
Chapter V
Although thousands of miles apart, Graham considers the possible link between the shamanistic use of ayahuasca in the Am
Chapter VI
At Mexico's Temple of the Sun, Graham experiences the extent of the Mayans' astronomical expertise and investigates thei
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