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Watch Naica: Secrets of the Crystal Cave online — it may be available on legal streaming platforms such as YouTube, Netflix, Prime Video, Hulu, Disney+, and others.

In 2008, a team of international scientists explore a Mexican cave filled with giant crystals. In one of the deadliest environments on earth, without specialized suits and equipment, the scientists would die in minutes. Can they unlock the secrets of the huge crystals, despite the challenges?.