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.
Episode Duration: 56 minutes and 46 seconds
Episode Number: 108
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Head into the unknown with explorer Steve Backshall as he journeys to the world's last unexplored places and faces challenges around the globe, encountering extraordinary wildlife and meeting remarkable people along the way.
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