Cities of the Underworld - Season 4

Season 4
Right beneath our feet, there are cities hidden by time that may hold clues that could rewrite history. In Cities of the Underworld, Don Wildman travels to the farthest and deepest reaches of the globe, using cutting-edge technology to explore mysteries buried deep underground. Across the season, Don will follow in the footsteps of treasure hunters to search for a lost Aztec colony, travel to Croatia to learn about the lost history of a little known pirate queen who supposedly ruled her empire from a muddy cave, and explore tunnels below the city of Los Angeles that may hold the clues to solving one of the most infamous cold cases in American history.
Episodes

Mayan Apocalypse
Don Wildman explores deep below ancient ruins as he searches for clues pointing to the true fate of the once-mighty Mayan empire.

America's Military Underground
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. He tours a Titan II missile site near Green Valley, Arizona; roams outside Area 51 and Nellis Air Force Base, Nevada; explores a tunnel boring machine (TBM) at the Three Rivers Tunnel Project near Fort Wayne, Indiana; examines the potential for nuclear-powered tunnel boring; tours the former emergency relocation bunker for the United States Congress under West Virginia's Greenbrier Resort; and investigates U.S. Army underground urban warfare training in Indiana.

Murder Tunnels
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.

America's Ancient Ancestors
Don goes deep beneath the Great Lakes and explores flooded caves as he searches for evidence of a mysterious, cave-dwelling, pre-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.

The Pirate Queen's Lair
Don explores newly discovered ruins, caves, and shipwrecks in Croatia and Montenegro as he uncovers the true story of Queen Teuta of Illyria, a formidable queen who dared to defy the mighty Roman Republic in the 3rd century BC.

Templars And The Founding Fathers
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.

Secrets of the Ancient Metropolis
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.

The Lost Aztec Colony
Don follows the clues hidden underground as he searches for evidence of 10,000 Aztecs who fled Mexico with Montezuma's treasure and disappeared somewhere in America, perhaps returning to their ancestral home, Aztlán.
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