Nice find!
That axe head in the middle looks perfect
If the metal object is actually buried and not simply lost in the woods or weeds, then I could make a guess as to why it would have been buried. Axes have always been valuable to men who lived off the land. Consider if a man knew he was dying and that ax was his most valuable tool and he had no one to pass it to, or is alone when he is dying. Would he bury his valuable ax?
This likely would not make sense to most. It does to me. I am very old and the one thing constantly on my mind as I live alone with only the items that I have treasured, and no one to give them to. I would love to bury my most precious items in some place in the woods, because they are useless to anyone else. If I had the land I would bury my Ax.