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Episode 7 | 49m 22s | Video has closed captioning.
Return to Mexico, where Steve Backshall explores a honeycomb of subterranean Mexican caves that the ancient Maya believed were a portal to a terrifying underworld. In a dark and flooded cave, Steve finds incredible never-before-seen artifacts.
Aired: 05/06/20
Expires: 01/15/24
Q&A
Steve Backshall takes PBS behind his adventures, explains how the expeditions are chosen, and explores our role in protecting these magnificent locations.
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