I’ve now only a couple caves left to explore in the system. I’m all out of troll, dragon and lizard-people jokes. So, instead I will just encourage you to reserve your tour in advance, since they can sell out. I was lucky to get the last single ticket to the shortest tour, where I was able to see the jewel-like dog’s tooth structure above. There are many more interesting crystal and other features to see. And the cave maps continue to expand as new sections are explored.