Seasons & episodes

S2 · E1Chapter I 2024-10-16 · 42 min＋

From ancient footprints to mysterious earthworks, Graham continues his journey into the past alongside experts and curious minds, including Keanu Reeves.

S2 · E2Chapter II 2024-10-16 · 41 min＋

Graham searches for answers to the questions behind ancient works of art, including 25,000-year-old Amazonian paintings and the megaliths of Rapa Nui.

S2 · E3Chapter III 2024-10-16 · 39 min＋

Accompanied by local experts, Graham compares ancient oral traditions and learns Sacsayhuamán in Peru may be older than archaeologists ever imagined.

S2 · E4Chapter IV 2024-10-16 · 41 min＋

Graham learns of a stone-shaping technique now lost to history, and explores how ancient Amazonians managed to thrive in an inhospitable rainforest.

S2 · E5Chapter V 2024-10-16 · 41 min＋

Although thousands of miles apart, Graham considers the possible link between the shamanistic use of ayahuasca in the Amazon and tobacco in New Mexico.

S2 · E6Chapter VI 2024-10-16 · 40 min＋

At Mexico's Temple of the Sun, Graham experiences the extent of the Mayans' astronomical expertise and investigates their complex calendar system.