Secrets Underground

6:00 AM to 7:00 AM

Thursday 16 January

Mystery of the Ice Cave

Season 2 Episode 6 of 8

A strange cave freezes in summer and melts in winter, and a huge sand dune swallows a small child in an instant. Rob and Stefan explore these mysteries

Secrets Underground airs on Discovery Science +1 at 6:00 AM, Thursday 16 January. (Subtitles, audio description.)

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