our shuttle van driver made out stop here and gave us an option and...being a tourist, why not. took elevator ride down to the cave entrance, paid 5€ and got on the boat. it was nice and cool cave and they must had 3 boats that sat 10 people.
to my surprise, it was very small cave with lots of interesting formations. one minute would have been enough but it was stretched to 10 min.
natural light that was coming from the other side illuminating under water was quite interesting.
our boat captain tried very hard to earn his took, yes he did mention for tip. read more