...but this documentary has a lot more footage and gives a new perspective on the caves I thought others might enjoy as much as I did.
A team of international scientists explore a Mexican cave filled with giant crystals.
With temperatures near 120° Fahrenheit (48.8° Celsius), and over 80% 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.
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