The 10 most amazing unexplained artifacts

Every once in a while archaeologists (and sometimes regular Joes) make some remarkable discoveries. Stunned, they are often unable to explain what it is they’ve found, how it came into existence, or ascertain its value. This is a comprehensive list of such artifacts; artifacts that many believe should have never existed given the discerned age/period of their creation.

The London hammer - a tool older than history