Watch Trailer
DISCLAIMER: Not all titles shown are currently available on all streaming providers.

Watch Underground Marvels Season 1 Episode 3 Online

  • 6/10
  • COUNTRIES: United Kingdom,United States of America
  • Subtitles: English

A vast system of tunnels built almost three thousand years ago was the site of the greatest battles of antiquity, and these disorienting passages could be the deadliest weapon in war; experts reveal what made this underground world so terrifying.