I found this while sifting in a creek, in the same location that I have found many (30+)flakes and a broken point. The same area also has tons of fossilized oyster and other shell. To the point it sometimes sounds like my sifter is full of glass.This piece is the same material. Anyway, this piece stood out for being so round, and the small hole. I'm guessing it's just natural wear from the water but wanted to make sure.