Well, this goes back to why you should get peer review before going to the press...

That said, while the experts may be right, he may be right too. There have been many stories of very intelligent experts denying something could possibly be true, only to have to concede later that it was.

It will be interesting to see how this young man handles the way the experts are refuting his claim. I hope he learns from it and continues to pursue his interest in archaeology.