Newbie- Cannonball or Indian Game Stone?

[FSFT]

Hello All-

My apologies- Posted this earlier in wrong form. Darn new guys.

I live in TN close to Indian Mound and was working in the yard and found this round, what appears to be rock, and thought it might be a cannonball. However, the dimensions (4.5" dia, 4.6pds) don't match any of the charts. Thinking it could be a chunkey. We're 3 miles off the Cumberland River and this area is rich in Native American history. What has me puzzled is the appearance of a man made square hold like what an allen wrench would manipulate. I used dial calipers and it measures 0.205 x 0.203. Amazingly close tolerances.

Any ideas would be appreciated.

This site has me pumped to start looking around the rest of our 9 acres

Thanks

FSFT

 

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[taz42o]

Not a cannonball. Read what an expert says about stone cannonballs at this link.

http://www.treasurenet.com/forums/what/358886-stone-cannon-ball.html

 

[FSFT]

Not a cannonball. Read what an expert says about stone cannonballs at this link.

http://www.treasurenet.com/forums/what/358886-stone-cannon-ball.html

Thanks - I'm looking at that possibility. I'm just amazed with the tolerance of the square

FSFT