Board Thread:Manga/@comment-5774380-20160808233126/@comment-27321453-20160812183623

I wondered the same, what could of possibly be in the basement that Grisha was already gonna show it to Eren had the Walls not been breached? I'm guessing books (like the one Armin's grandpa had) or documents or even Grisha's diaries about the history of the world. The anime actually shows the basement door under a wreckge but the anime is not canon so who cares.