Stone with nut cracker hole from Native Americans? Am I correct?

[Mike Kennedy]

View attachment 1571865
Found in a pile of rocks that were throw to the back of a growing area cleared for debris. Either put there by early settlers or Native Americans. Roll it and it lands upright. Doesn't respond to a magnet.

 

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[jamey]

I think it is natural.i can not see any signs of use,they took advantage of those but not in this case

 

[Mike Kennedy]

This photo is a close up of the hole which is perfectly round. It weighs about 4 lbs.

 

[jamey]

that is the hole left from the fossil that fell out i think

 

[kingskid1611]

Looks like a fossilized skull...the hold is where the brain fell out..... just kidding

 

[Albertaclipper]

I believe that is a "Sandstone" or "Clay" Concretion.

 

[The Grim Reaper]

Concretion for sure. Not an artifact of any kind. No evidence on it anywhere that says if was altered or utilized by man.