The UnXplained (2019)
Season 7: Episode 18
Mysteries of the Underground
TMDb
Air Date:
2025-12-07
Genre
Release Date
2019
End Date
2025
Episode Description
Beneath our feet lie hidden ancient tunnels, sacred caves, and shadowy passages into a world of darkness shaped by nature, carved by man, and steeped in myth. Are these underground realms mere remnants of the past?
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Episode 1
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Episode 2
Mysterious Structures
Episode 3
Strange Creatures
Episode 4
Unnatural Nature
Episode 5
Bizarre Rituals
Episode 6
Life Beyond Death
Episode 7
Mysteries of the Mind
Episode 8
Incredible Survivors
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The Greatest Escapes
Episode 2
Superhuman Senses
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Mysterious Curses
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The Underground World
Episode 6
Leading Double Lives
Episode 7
Mysteries of the Bible
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Mysterious Mummies
Episode 9
Secrets of America's Monuments
Episode 10
The Search for Atlantis
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Extraordinary Engineering
Episode 12
The Power Of Gold
Episode 13
The Truth About Bigfoot
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The Hunt for Hidden Treasures
Episode 2
Satanic Encounters
Episode 3
The Search for the Ark of the Covenant
Episode 4
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Episode 5
Secrets of the Immortals
Episode 6
Sacred Bones
Episode 7
Mysteries of Mars
Episode 1
Mysterious Ancient Ruins
Episode 2
The Mystery of Genius
Episode 3
What Lies Below?
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Secrets of Abandoned Places
Episode 5
Acts of God
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Serial Killer Creatures
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Mysterious Tombs
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Uncanny Curses
Episode 9
Superhuman Feats
Episode 10
Mysteries of the Missing Link
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Surviving the Impossible
Episode 12
The Search For King Arthur
Episode 13
Wonders of the Ancient World
Episode 14
The Hunt For Jack The Ripper
Episode 15
The Search for Extraterrestrial Life
Episode 16
Real Life Monsters
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Episode 18
The Bermuda Triangle and the Beyond
Episode 19
Secrets of the Founding Fathers
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The Weird Wild West
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Devastating Disasters
Episode 22
Mysterious Monoliths
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Lost Cities
Episode 2
Tales of the Dearly Departed
Episode 3
Curses Unleashed
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The Power of Prophecy
Episode 6
Mysterious Monsters
Episode 7
Sacred Rituals
Episode 8
UFO Hotspots
Episode 9
Extraordinary Structures
Episode 10
Holy Relics
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Episode 2
The Time Travelers
Episode 3
Secrets of Ancient Structures
Episode 4
Mysteries of the Vikings
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Strange Stories of the Presidents
Episode 6
Bizarre Afflictions
Episode 7
Strange Technology
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Unbreakable Codes
Episode 9
Strange Stories of World War II
Episode 10
Monsters Among Us
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The Golden Age of Pirates
Episode 2
Impossible Ancient Inventions
Episode 3
The Lost
Episode 4
Alien Contagion
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Ancient Bible Relics
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Islands of the Damned
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Tales From Antarctica
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Robot Revolution
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Secrets of the Spies
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Mysterious Urban Legends
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Strange Tales from the American Frontier
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Terrors of the Deep
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Episode 18
Mysteries of the Underground
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