So about a year back I was fortunate enough to be able to travel to Indiana and photograph this beautiful untouched cave. A friend of mine told me his parents apparently found this cave when they were kids when a sinkhole opened up the entrance under a tree in the middle of some farmland. The property this lies on is currently being sold from my understanding.
Only his family knows about the cave, and I am the only one to have ever photographed it.
It took us about an hour to find the entrance, and it felt like the scene in harry potter where they slide into the tunnels of the Whomping willow.
Inside the cave we found remains of some type of canine and cow/ deer bones. (they probably wondered in a long time ago) it goes down maybe 100 feet or so, and had many chambers hidden all over. I actually discovered a few new areas of the cave while taking photos over the course of a day. When I was leaving Indiana I heard that apparently on the same property a new sinkhole revealed a new cave that no one has yet explored. Might go back this next summer for more explores.
If there is any interest I have a few hundred more photos of this location as well!