Naica, Secrets Of The Crystal Cave

Someone recently posted a stunning video of a crystalline cave in Mexico, I thought a more in-depth look might be appreciated. This is a Discovery Channel documentary of a group of scientists who explored the cavern.

Perhaps this cave should be a candidate the next time the 7-Wonders-Of-The-World are voted for?
- video encodings still in process -
- video encodings still in process -
- video encodings still in process -
- video encodings still in process -
- video encodings still in process -