I spent a fair amount of my late teens visiting wild caves. Then I moved to a place with no caves, moved again, and many years later I'm not sure I could repeat anything I used to do underground. But I still enjoy a tour of a good show cave, especially when they lay on the science instead of the "this formation looks like Snoopy" stuff. And I can still put up a mean quiz on caves. Don't let the questions drive you BATS.