http://ngm.nationalgeographic.com/2011/01/largest-cave/peter-photography

It's a beautiful world really, isn't it?

Looks like the top of a face with glowy eyes staring at you ..

Yeah, I started looking into how much it would cost to go to 'Nam.  All the people I know who were there in the war say it's one of the most amazingly beautiful places in the world even with the war going on.

That's an amazing picture.

I used to go caving in my yoof, but those caves are just an order of magnitude greater than any i've been in.