Help identify

[Freemindedclark]

Found this the other day out mushroom hunting in a location that I have found a large bowl. It is some kind of hard stone, very heavy, and appears to have been flattened on two of the sides.

 

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[Freemindedclark]

What would this have been used for?

 

[quito]

IF it had been used, it looks to me like it would have been used as a Mano.

 

[Jon Stewart]

From here in Michigan it looks like a mano. But I am a long ways away.

 

[Gaspipe]

Nice rock

 

[Freemindedclark]

Nice rock

I was hoping someone would give me the recognition I deserve.