Mystery of the Lost Labyrinth Underground Marvels : Season 1 Episode 2
Yesterday 1h 00m int(0)
Aired: October 2nd, 2019 @ 10:00 PM EST on Yesterday
A strange, centuries-old labyrinth built into an abandoned quarry was built by an eccentric millionaire, and no one knows why; but now, a new excavation into this mysterious 9,000-foot tunnel system might finally reveal its dark secrets.