Season 4, Episode 8

Underwater Kingdom

A hidden cave entrance below a lake could finally lead the team into the Keyhole Chamber. After training in Florida with some of the best cave divers in the world, Chad navigates a deadly maze of flooded tunnels and makes a shocking discovery.
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Thursday
Feb 27
10pm | 9c
Friday
Feb 28
2am | 1c
The Aztec Aqueduct

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