Board Thread:Theories and Speculation/@comment-5413572-20151114042410/@comment-734582-20151114143029

Elveonora wrote: Most likely destroyed, there is no indication he was buried. It seems weird to me that in a world where it's well known that the body of a Ninja is invaluable, nobody is ever cremated. I would expect it to be standard practice.

Considering Hagoromos god-like power, it seems to me that he would've hidden his grave at an otherwise inaccessible place to ensure his final resting place truly was final. He had the power to summon the dead, i would expect he was aware that something like Edo Tensei could exist or be created.