[throwaway_kufu]

I see it now, future oceanic archeologists uncover the container and publish an article about a long lost undersea civilization that used container as part of an religious site where they made offerings to their gods as part of a ritual. It will remain a mystery as to why the civilization left the site and disappeared but the team will be soliciting more funding to continue its research.

[AnimalMuppet]

And then, as they find more of them, they speculate about how wide the reach of this lost civilization was...