12 Most Mysterious Archaeological Artifacts Scientists Still Can't Explain

Have you ever walked down the street, spotted something unusual out of the corner of your eye, and wondered how it got there? All of us have had that feeling at some point, and sometimes it even happens to experts and scholars! Archaeologists are becoming used to that feeling, because they've come across some totally baffling discoveries over the years. We've put a collection of them together in this video so you can share in their sense of wonder.