Seasons and episodes
1Season 1 Mar. 02, 2007
1 - 1Istanbul Mar. 02, 2007- 1 - 2Scotland's Sin City Apr. 23, 2007
- 1 - 3Hitler's Underground Lair Apr. 30, 2007
- 1 - 4Rome's Hidden Empire May. 07, 2007
- 1 - 5Catacombs of Death May. 14, 2007
- 1 - 6City of Caves May. 21, 2007
- 1 - 7New York Jun. 04, 2007
- 1 - 8London's Lost Cities Jun. 11, 2007
- 1 - 9Beneath Vesuvius Jun. 18, 2007
- 1 - 10Freemason Underground Jun. 25, 2007
- 1 - 11Dracula's Underground Jul. 09, 2007
- 1 - 12Secret Pagan Underground Jul. 16, 2007
- 1 - 13Underground Bootleggers Jul. 23, 2007
- 1 - 14Rome: The Rise Jul. 30, 2007
2Season 2 Jan. 28, 2008
- 2 - 1Underground Apocalypse Jan. 28, 2008
- 2 - 2Vietnam Feb. 04, 2008
- 2 - 3A-Bomb Underground Feb. 11, 2008
- 2 - 4Viking Underground Feb. 25, 2008
- 2 - 5Hitler's Last Secret Mar. 03, 2008
- 2 - 6Maya Underground Mar. 10, 2008
- 2 - 7Mob Underground Mar. 17, 2008
- 2 - 8Prophecies From Below Mar. 24, 2008
- 2 - 9New York: Secret Societies Mar. 31, 2008
- 2 - 10Washington D.C.: Seat of Power Apr. 14, 2008
- 2 - 11Stalin's Secret Lair Apr. 21, 2008
- 2 - 12Katrina Underground Apr. 28, 2008
- 2 - 13Secret Soviet Bases May. 05, 2008
3Season 3 Oct. 26, 2008
- 3 - 1City Of Blood Oct. 26, 2008
- 3 - 2Tunnels Of Hell Nov. 02, 2008
- 3 - 3Real Mafia Underground Nov. 09, 2008
- 3 - 4Secret Sin City Nov. 16, 2008
- 3 - 5Hitler's Trenches Nov. 23, 2008
- 3 - 6Barbarians' Lair Dec. 01, 2008
- 3 - 7Land of Manson Dec. 08, 2008
- 3 - 8Gladiators: Blood Sport Dec. 15, 2008
- 3 - 9Secret Holy Land Dec. 22, 2008
- 3 - 10Under the Rock Jan. 12, 2009
- 3 - 11Tomb of the Lost Mummies Jan. 26, 2009
- 3 - 12Gods of War Feb. 02, 2009
- 3 - 13Alcatraz Down Under Feb. 09, 2009
4Season 4 Sep. 07, 2021
- 4 - 1Mayan Apocalypse Sep. 07, 2021
- 4 - 2America's Military Underground Sep. 14, 2021
- 4 - 3America's Unmapped Murder Tunnels Sep. 21, 2021
- 4 - 4America's Ancient Ancestors Sep. 28, 2021
- 4 - 5The Pirate Queen's Lair Oct. 05, 2021
- 4 - 6Templars and The Founding Fathers Oct. 12, 2021
- 4 - 7Secrets of the Ancient Metropolis Oct. 19, 2021
Synopsis
Don Wildman travels to the farthest and deepest reaches of the globe, using cutting-edge technology to explore mysteries buried deep underground.
Original title Cities of the Underworld
TMDb Rating 7.9
First air date Mar. 02, 2007
Last air date Oct. 26, 2021
Average Duration 43 minutes
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