Season 1, Episode 2

Mystery of the Serpent Mound

Rob Nelson explores mysterious tunnels beneath Denver's airport, capitol building, and downtown to investigate rumors of a secret organization. Also, the ancient secrets of a giant mound shaped like a serpent are investigated.
See Tune-In Times

Previous Episode

Tunneling Towards Freedom

Next Episode

Capone's Escape Tunnels

On TV

What's New in Shows

Follow Us Everywhere

Join the party! Don't miss Travel Channel in your favorite social media feeds.