[Blood of Tyrants]

I know. I went to one many years ago that had a small train that took you in and out.

[Verginius Rufus]

I’ve been to Postojna Cave in Slovenia (not far from the Croatian border), which may be the largest cave in Europe. It does have a small train which visitors ride inside the cave.

[caver]

I’ve been in caves that have all sorts of things but have never seen a train in a cave.