After talking about what to do, the most unusual comment was "Let's visit a cave". So we did.
The Black Hills Caverns is more cave than cavern but was very interesting. This is definitely the tightest cave we have ever been in for a tour. The sides are close much of the way and many times the ceiling is only at 6 feet or less.
We selected the longer "Adventure Tour" which takes us to the lowest points in the cave. There were a lot of stairs.
We are a couple who have started on a new adventure...