Return to the Giant Crystal Cave

Series 1-Episode 2

Series 1-Episode 2

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Summary

Part two of two. Documentary following a team of scientists investigating a cave system in Naica, Mexico, that holds 50-ton crystals, each softer than a finger nail and some stretching up to 11 metres long. However, with temperatures of 114 degrees, and 100 per cent humidity, the experts must use preheated cameras to investigate them and try to understand their formation.

Nature Documentary

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