This Feltex Award-winning documentary dives, abseils and squeezes under the mountain — Mt Arthur in Kahurangi National Park — to record the exploration of the subterranean world of the Nettlebed Cave System. At nearly one kilometre underground the system is New Zealand’s deepest cave, and a mecca for cavers from around the world. The cavers relay their motivations and anxieties as they negotiate the uncharted water-carved limestone labyrinth. Directed by Ian Taylor, it screened in the Lookout series. Claustrophobes beware: there are no lattes at Soft Rock Cafe.

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