Earth Strange

Video: A rare glimpse of the Cave of Crystals

Discovered in the year 2000, the Cave of Crystals in Mexico is truly stunning. It contains some of the largest natural crystals ever that have ever been found on earth. Some of the selenite structures have grown beyond 32 feet long (10 meters). The BBC reported on Professor Iain Stewart’s rare glimpse into this amazing subterranean spectacle for the series “How the Earth Made Us.”

Crystal cave (Oscar Necoechea/Cproducciones)… We kept on being told how difficult it was going to be to film in the Naica Cave, but nothing really prepares you for the extremes of that cavern. It’s about 50C in there, but it’s the virtually 100% humidity added on top that makes it a potential killer.

That combination means that when you breathe air into your body, the surface of your lungs is actually the coolest surface the air encounters. That means the fluid starts to condense inside your lungs – and that’s really not good news.Iain Stewart in the cave of crystals

When the cave was first discovered it was just an accident.

Miners working in the Naica silver mine broke through the walls of the cavern and were astounded to discover these enormous crystals – the biggest anywhere on Earth. But when the first people went in to explore, they were almost overcome by the conditions – and there’s some pretty hairy video footage of them coming out of the cave on the verge of losing consciousness. So we knew the dangers were real. When you first look at the kit your first thought is: “Is that it?” There’s a special cooling suit – which is basically like a suit of chain mail but filled with ice cubes. Then there’s a breathing system which feeds cool, dry air into your mask. It’s OK to take the mask off for a short while, but do without it for more than about 10 minutes, and it’s likely that you’re going to start keeling over. I was lucky of course. All I had to do was stand there and talk, but the cameraman and all the others helping set out the lights were having to work in these conditions, wearing these cumbersome suits, and they really struggled. We had a doctor outside the cave to monitor our vital signs, and we were coming out of the cavern with our heart rates up at 180. The biggest danger was falling over; rescuing someone inside would have been very tricky. Despite all the dangers, my overwhelming memory is the sheer beauty of the place. …


Read more: BBC News – A rare glimpse of the cave of crystals.

The article goes on to say that the mine will probably eventually close and the pumps will be taken out causing it to flood, putting these giant crystals once again out of reach.

It is fun to think that there are many more such places in the Earth’s crust. The geology of the area around the cave suggests many more possible crystal caves around Naica.

Check out the video:

Have you ever been in a cave? Many have been spelunking and there are many beautiful caves to see, but Mexico’s Giant Crystal Cave is a one of a kind wonder, at least so far.


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Do the crystals that big have a value? Any industrial uses?

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