Man in Czech Republic accidentally finds Bronze Age spearhead mold in his backyard

An image of two halves of a spearhead mold, the rock gray and red with the left open half showing the mold for a teardrop shaped spearhead. .

A seemingly dull rectangular stone, used as part of a foundation for an old barn in a Czech garden, is actually half of a rare Bronze Age mold used to make spearheads, a new study finds.

The almost 9-inch-long (23 centimeters) mold, carved into a volcanic rock known as rhyolite tuff, dates to the Late Bronze Age, around 1350 B.C.