Board Thread:Theories and Speculation/@comment-31848378-20170429190021/@comment-25122992-20170429191539

It wasn't a grave, it was a memorial of sorts made by Naruto, since Jiraya couldn't have an actual grave because of the reason already mentioned by Vladosaurus. Also, @Arbaaz009, I don't get why you have no idea about it, even while Kabuto himself voiced his wish to reanimate Jiraya and the said reason why he hadn't been able to do so.