via anisosynchronic and several others.
...three things I've done that most other people haven't:
- Stood inside a diesel engine cylinder. (I did this while visiting Kings Point Maritime Academy. It was low speed diesel engine designed for large ships with a stroke of approximately 7 feet. Cylinder diameter large enough that they made an inspection hatch. Rather claustrophobia inducing.)
- Paddled the 110-mile long Allagash River canoe trip.
- Climbed Mt. Katahdin.