S11 E6 6/28/23

Hunt for Spain's King Arthur

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.

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Jul 3
11:01pm | 10:01c
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Jul 4
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