There is nothing there when expanded. It is blank.
Like I said to Dave, I think something is corrupt on the phone. How much free space do you have?
Michael had the right idea, we need to find some way to get the voice memos off the phone so it can be fixed/restored. If you were to do a backup and restore now you would lose your voice memos since those aren't being backed up.
BTW I don't even think AirDrop would work, nothing outside of the phone can see them.