Arizona PBS Previews

Expedition with Steve Backshall : 105

Preview | 30s

"Borneo - Dark Shadow" - 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

Rating: NR

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