I am constantly amazed at the things that can be discovered in this world. The caves at Škocjan really blew me away. It is one of the largest cave systems in the world, and the caves have an underground river running through it. It was interesting to move through the cave and progress deeper into it and hear the water echoing. One interesting fact is that it is really hard to tell how big the “room” you are in is because you have no reference points. When the tour guide told us what could fit in the cave, we were all astounded.