Oh you betcha!
In fact I did a bit of 'spelunking' (if you can call it that in a mine shaft) with a couple of other 'toots' while I was at da Tech about 50 years ago — in an old mine right in beautiful uptown Houghton — not 600 yards from Franklin Square!
(Further details excluded — to protect the foolish!)
Statute of Limitations on whatever you did expired on that looong ago. Spill it!!!
Oh, but if you are talking about someone being foolish today, then I understand.
Back in the early 90's when DH falls was still open to the public I went exploring in the test tunnel someone drilled in the rock to the left of the falls. Years later I saw that rubble had closed the entrance, and I was quite grateful that did not happen while I was there.
(still wanna hear about it though
)