The trip is 5 hours one way in or out. A small tank and rope are not a sufficient response. They must be trained and will be forced to travel through some tiny channels alone.
I still kind of like my crazy idea. Elon Musk is sending a team. Maybe they can pull it off.
https://www.freerepublic.com/focus/f-chat/3668037/posts?page=3#3
As for the narrow section, maybe let Musk’s Boring Company swim down a jackhammer to widen it out.
That’s why I said on a rope.
