Dude, I didn't realize that was a real story either.
sparrowsong , no, it's just a coincidence. Outlander's Jamie Fraser doesn't have anything else in common with the real Dunbonnet.
ETA: from the comments, "No one has mentioned this, but coincidentally, Diana Gabaldon was not aware of the real Dunbonnet’s name when she wrote the books."
That's pretty cool. I didn't realize it was a real cave.
I didn't even realize James Fraser is based on a real person??
Same! mcsangel2, that's funny. I don't think I could have gone into that cave, and I am not a claustrophobic person generally speaking, but that looked like a tight squeeze. How did a grown man get in there?! And stay there for so long. Crazy.