Amazing clip of the world' largest cave the Hang Son Doong in Vietnam by photographer Ryan Deboodt. The scale is unbelievable. The cave is so large clouds actually form in them.

[Edited 3/21/15 18:23pm]

Wow, that's really cool. Would never have known that a place like this existed. It's like a film out of a sci-fi movie. I wouldn't mind visiting there.

it's like an underground world. i watched a documentary about this cave, looks interesting. i wonder how many other caves like this we have not found yet?

wildgoldenhoney said:

Wow, that's really cool. Would never have known that a place like this existed. It's like a film out of a sci-fi movie. I wouldn't mind visiting there.

You might be thinking about Star Trek Wrath of Khan. The genesis device built an entire forest like world inside a cave.

That is spectacular!

wow, i wonder what kind of "animal life" if any is down there. looked like a rainforest in parts, that's HUGE! would've like to see better cinematography at the beginning that show the exterior boundaries of the cave and a "map" showing exactly where it is. was that china, korea, japan, etc?