Expedition Unknown Season 12 Episode 6
Hunt for Spain's King Arthur
Returning Series
48 min
8.2/10 Votes: 3878
Plunging hundreds of feet below ground, Josh explores Spain's treacherous La Garma cave system and finds a floor littered with human remains more than 1,000 years old; Josh's deep dive is a quest for scientific proof of Spain's legendary King Pelayo.