This underground wonderland is hiding beneath the Nullarbor | 7.30 // TRAIN BRAIN

This underground wonderland is hiding beneath the Nullarbor | 7.30

The Nullarbor caves are an underground world that few people know about, and even fewer have explored it — but cave diver Stefan Eberhard is one of the lucky few.
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ABC News In-depth

Welcome to ABC News In-depth, where you'll find our long-form journalism and explainers to help you understand what's going on in the world around you. You'll find all your favourite ABC News programs: Four Corners, Foreign Correspondent, Australian Stor...

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