Stone arrowheads, produced through a process known as knapping, are a major focus of events like the Bald Eagle Knap-In Primitive Arts Festival held annually by the Susquehanna Valley Flint Knappers ...

Sharp stone technology chipped over three million years allowed early humans to exploit animal and plant food resources. But how did the production of stone tools -- called 'knapping' -- start?

Every day, hundreds of stone artifact enthusiasts around the world sit down and begin striking a stone with special tools attempting to craft the perfect arrowhead or knife. This craft is known as ...