Tasmania has a unique geology because of its karst landscape, meaning its surface is pockmarked by caves. The openings to these caves are often obscured by vegetation, with hikers, cavers, bushwalkers and adventurers sometimes plummeting to their deaths - never to be seen again. The island is also beset by other dangers like freezing cold, dense vegetation and freezing cold. And the Tasmanian devils are known for their ability to disappear a human body.

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