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Cities of the Underworld Season 4 Episodes
Season 4 Episode Guide
8 Episodes 2021 - 2021
Episode 1
Mayan Apocalypse
Tue, Sep 7, 2021
Don Wildman explores deep below ancient ruins as he searches for clues pointing to the true fate of the once-mighty Mayan empire.
Episode 2
America's Military Underground
Tue, Sep 14, 2021
Don explores top-secret military and government tunnels and looks into classified technology that could be used to build entire cities...right under our feet.
Episode 3
America's Unmapped Murder Tunnels
Tue, Sep 21, 2021
Don uses brand-new mapping technology to expose the dark and deadly uncharted spaces beneath American cities. He explores the criminal underworld below Portland, Oregon; Seattle, Washington; Chicago, Illinois; and Los Angeles, California.
Episode 4
America's Ancient Ancestors
Tue, Sep 28, 2021
Don goes deep beneath the Great Lakes and explores flooded caves as he searches for evidence of a mysterious, cave-dwelling, before the Clovis society that may have been the first people to reach America. Evidence presented: a mastodon image carved on a rock beneath Lake Michigan, 16,000-year-old poop and arrowheads from a dry cave in Central Oregon, and a 13,700-year-old human female skeleton from Cenote Naharon in Mexico's Yucatan. Nicknamed Eve of Naharon, she is the oldest human skeleton found in the Americas.
Episode 5
The Pirate Queen's Lair
Tue, Oct 5, 2021
Don explores newly discovered ruins and caves in Croatia as he uncovers the real story of a formidable queen who dared to defy the mighty Roman Empire.
Episode 6
Templars and the Founding Fathers
Tue, Oct 12, 2021
Don goes deep beneath Bagras Castle, a Knights Templar stronghold in Turkey, to explore a provocative theory that may link the fabled secret society to Freemasonry and America's founding fathers. He also explores the Old North Church in Boston, Massachusetts and Fort Mifflin in Pennsylvania.
Episode 7
Secrets of the Ancient Metropolis
Tue, Oct 19, 2021
Don explores the massive underground cities of Cappadocia in the mountains of Turkey that may have been home to the first civilization on Earth. Also explored are Göbekli Tepe.
Episode 8
The Lost Aztec Colony
Tue, Oct 26, 2021
Don follows the clues hidden underground as he searches for evidence of 10,000 Aztecs who fled Mexico and disappeared somewhere in America.