Now that we know the room and hall is flooded we can come prepared. A siphon, a hose, something.

I admit I'm at a loss when it comes to the notebook. It wouldn't have been Dr. Solis' at any point, as she wouldn't have needed to take these notes. Same with any lighthouse keepers. And as far as we know the spirits can't write clearly - you've seen the Librarian's efforts and that one is one of the few that's almost literate.

Decades' worth of people, taking notes on every one of us to come into town. We never noticed, and I'm not sure how impressive that is given all the darkness, but it's unsettling.

Found an entry in here that must be about you, by the way. "Black-haired male, probably archaic Earth-Asian. Well-dressed, well-armed, posture and tone suggest education. Nobility? Ruler? Watch this one."