Borneo – Dark Shadow
Episode 5 | 48m | Video has closed captioning.
Follow Steve Backshall as he drops down a sinkhole to explore a series of underground Bornean caves threatened by deforestation and limestone quarrying. The journey may lead to the potential to explore other undiscovered subterranean worlds.
Aired: 02/12/20
Expired: 06/17/20
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Problems Playing Video? | Closed Captioning