Native american abrading stone art work nutting stone

This is,one of my best finds for today this,nutting stone is small and was found with two more from a calapse bank in my local creek here in North Carol;ina were i been doing all my findings i never seen a nutting stone so full of art work i feel this one may be the best one i have in my collection of nutting stones i do own a couple not decorated as the one i just entered in hope this one will open your eyes a little it did mine