Knapped petrified wood

 This was a very unusual find. It was spotted by a friend on a historical mound and by the knapping marks it pretty clearly was meant to be a spearhead or blade. If it was suitable for the purpose or not we might never know, as it was broken when found. It seems rather crude. My guess is that since it was a naturally flat rock they must have tried shaping it into a tool.

Petrified Wood

 

 Petrified wood is usually found in this grey color. It can be found almost anywhere, but an ancient riverbed is a good place to start looking. I found one on a hill though, and some have been found in creeks.