[Yeah, honestly, color Law confused. Turning towards him definitely seems to contradict his assumption of blindness, but then talking about the "air flow" definitely seems to support it. Poor eyesight, maybe? But then surely he wouldn't be able to make out Law in the poor lighting of the cave. Fortunately Law isn't desperate enough to take the rude step of asking outright.]

I don't. If I had to guess, they look like they're probably depicting the local mythology or history.
[Just based on the fact that these sort of things usually are, honestly. But also there's some stuff that looks like monsters and then magic people who could be god/goddesses? Seems to make sense for him.]

Are you interested in that sort of thing?