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Season 4 – odcinki (8)
0 America's Military Underground
14.09.21
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.
0 Murder Tunnels
21.09.21
Don uses brand new mapping technology to expose the dark and deadly uncharted spaces beneath American cities.
0 The Lost Aztec Colony
26.10.21
Don follows the clues hidden underground as he searches for evidence of 10,000 Aztecs who fled Mexico and disappeared somewhere in America.
0 Secrets of the Ancient Metropolis
19.10.21
Don explores the massive underground cities in the mountains of Turkey that may have been home to the first civilization on Earth.
0 Templars and the Founding Fathers
12.10.21
Don goes deep beneath a Knights Templar stronghold in Turkey to explore a provocative theory that may link the fabled secret society to the founding fathers of America.
0 Mayan Apocalypse
7.09.21
Don Wildman explores deep below ancient ruins as he searches for clues pointing to the true fate of the once-mighty Mayan empire.
0 America's Ancient Ancestors
28.09.21
Don goes deep beneath the great lakes and explores flooded caves as he searches for evidence of a mysterious, cave-dwelling society that may have been the first people to reach America.
0 The Pirate Queen's Lair
5.10.21
Don explores newly discovered ruins and caves in Croatia as he uncovers the true story of a formidable queen who dared to defy the powerful Roman Empire.
Informacje o serialu
Cities of the Underworld descends below the streets of major cities such as New York, Cairo, London, and Tokyo to explore the remnants of subterranean civilizations left buried there.