One of my favorite experience of this entire trip was during the Climbing and Caving Adventure. We repelled down into the cave and only using head lights we were able to see the crystallized stalagmites and stalagtites which our guide told us all about. But the best part was when we got so far in to the cave that there was no light and we all turned off our headlamps. It was the darkest I've (n)ever seen and all you could hear were the bats flying around you! Coolest experience ever!