Black water rafting is really neat.  You repel about 100' down underground through this crack of cave hole that is about just big enough for me to squeeze my little butt through. That's not all, you can't see the bottom until you get about half way down and turn your head lamp on.  It is as dark as anything you have ever experienced.   They don't let most people take pictures, but I talked them into letting me take a few.  The objective is to end up in the river under the mountain and go rafting in the dark with ceiling cover with glow worms.  Your down under for about 5hrs.   You got to try it!

This training on the hillside is to learn repelling on lines.  (Guides Above)  The first step is a big one!

Having lunch before jumping off a ledge into the river.

Elsa and Ivan from Hong Kong we met on our journey that day.