It's a very beautiful cave. What struck me was the conditions inside it:
Now there's a story waiting to be told.
It's about 50C in there, but it's the virtually 100% humidity added on top that makes it a potential killer.
That combination means that when you breathe air into your body, the surface of your lungs is actually the coolest surface the air encounters. That means the fluid starts to condense inside your lungs - and that's really not good news. Link
Thanks to Derek at Our-Local for finding this.
