No, that's not fake, it's all real...

[Crisidelm]

Pure selenite (gypsum) crystals 10 Mts long and 2 Mt wide...Chihuahua, Mexico.
http://www.laventa.it/en/naica_crystal_cave.html

 

[London Geezer]

COOL!!
At first i thought "...so..?" then noticed the size of those things...

 

[Crisidelm]

 

[doob]

8( ] impressive! That should be one of the top world wonders.

 

[JBark]

Wow, 50C and 100% humidity. That like the humidity of a rain forest with the temperatures of Death Valley. Bet that's real comfortable.

Pretty awesome looking, though. Wasn't that impressed, until I noticed the guy leaning over. Damn they're big.

 

[[maven]]

Wow, 50C and 100% humidity. That like the humidity of a rain forest with the temperatures of Death Valley. Bet that's real comfortable.

As the original link is saying, the humidity condenses on your skin and in your lungs (!) as they're colder, making things real bad real quick.

 

[Basic]

Unreal enough. But had they been blue, I would have paniced, looking for he Skaarj.