Expedition Unknown · SEASON 18
Inca Treasure Tunnels
Episode 6 · 2026-08-05

- Documentary
- Reality
- Action & Adventure
Episode overview
Josh helps discover and explore a labyrinth of lost tunnels; he dodges traffic to assist in a first-ever radar scan below the busy streets of Cuzco, Peru; he joins them as they push into the tunnels and find priceless ancient treasures.
42 minutes