Re: Opening Day Archery find
bbd, the fact that you found the possible artifact in a field with no creeks or streams nearby does point in the direction of an artifact. Looks like a hammer stone to me. Common artifact on prehistoric sites. The cortex looks pecked but I would have to see it in person. Go back to the field at another time and look very closely to see if you see any small flakes of stone. In your area of PA you might find quartz, rhyolite, and/or quartzite. There are other materials as well but those are the most common. I'm not that far from you about 1 hour so if you find more I would be happy to id your finds and record your site. Happy hunting!!
Hunting Success "Nature will teach you but you must spend time in her classroom"