So some of these stories I stumbled upon years ago really caught my interest. Tales of seemingly man-made items being found in rocks or coal dating back millions, or hundreds of millions, of years ....during the Triassic or Jurassic Periods, or in some cases going back even farther.
The science community calls these "Ooparts", which stands for "Out Of Place Artifacts". It seems impossible to imagine...."Tin-Hat" stuff. And yet these are not unique or even extremely rare any more. More and more are being found every year, on every continent.
Talk about the ultimate collectible!
This linked article is one of the better I have come across explaining this phenomenon. I think you will find it interesting.
Click Here: Ooparts Article