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Clip: Episode 5 | 38s | Video has closed captioning.
The team spends three days in the jungle searching for caves with their local guide. The terrain is so extreme that the Royal Marines learn their survival skills here. Aldo, a former Royal Marine looks back on his training in Borneo.
Aired: 02/12/20
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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