Oh my gosh! Hollow Earth!

Sigh, it's not the world's biggest cave. It's a really big passage, no doubt about that, but there are many caves out there which are longer, higher-volume, and so forth.

Nevertheless, it's some astonishing photography and a significant discovery.

I know where I'm going after the apocalypse.

Xinavera you are wrong, because actually according to national geographic's reserch and infared equipment to measure the size of the cave right down to the last millimeter, it is the biggest cave in the world right now, and until anyone finds an even bigger cave that the measurements of length, width, depth, height, distance, and area, then you are wrong. Get your information right before you go posting a comment that is false. Read this and you will be proven wrong - http://news.nationalgeographic.com/news/2009/07/090724-biggest-cave-vietnam.html

Wow, can God cook, or what?

es fantastico los milagros ke oculta la naturaleza es bellizimo felicidades sra. naturaleza y gracias!

Damn!!!! dis is so freakin cool.......

I'm with you misofly southern cali...I would leave my city life right now, just to be able to explore this Magnificent place that God has created.

maravillas del mundo que guardan secretos de nuestros antecesores

you might have mentioned it is in vietnam.

Marvin, it is in the first sentence. And in the quote below it.

There are so many things and places that we still haven't discover yet about this planet but this is incredibly awesome!

Wow amazing. I hope to get pictures like the 1st and 2nd one day.

$5 says they try to build a walmart in it :(

What a great place the flying spaghetti monster created.

Completely awesome