NAICA CRYSTAL CAVE (MEXICO)
A team of
international scientists explore a Mexican cave filled with giant crystals. With
temperatures near 120 degrees Fahrenheit (48.8 Celsius), and over 80 per cent
humidity, the cave is one of the deadliest environments on earth. Without
specialized suits and equipment, the scientists would die in minutes. Their
mission: to unlock the secrets of the mysterious ancient crystals, some of the
largest ever discovered.
http://youtu.be/KSbId57pzm4
http://youtu.be/KSbId57pzm4
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