Grinding Stone?

[RiverRat3]

Found this while walking with my son. I have found points and tools before by accident but this caught my eye. Thanks for looking.

 

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[kcm]

Now THAT is neat!! Was it found near a waterfall by chance? Or even a steep hillside?

 

[RiverRat3]

It was found next to a dead tree. The area it was found was a farm at one time but houses have been constructed on the land. No streams or steep hillside. A stream is within a half mile. Thanks for looking.

 

[kcm]

The more I look at it, the more I'm convinced it wasn't made by water action. As for who made it and why, I haven't a clue! ...Maybe some other folks will chime in on this today.

I hazard to guess anything, as I'm so consistently wrong - and I don't wanna be wrong on this one!

...One more question - what's the size? I'd guess the long direction of the rock is about 6" to 8"? ...Which would make the larger hole 3" to 4"? Could you add one more photo with a coin sitting inside please?

 

[Rege-PA]

Interesting but a natural concretion where a harder piece of the sand stone fell out when it fractured. Freezing and thawing frequently cause this, if you can find grinding striations in the bottom it could have been used as some type of mortar but from your picture none are evident. Mortars are frequently shaped with no sharp edges since these items were used daily and exhibit a high degree of external shaping with extreme grinding in the center. I`m sure many collectors on this forum have great examples to show you. Keep looking any rock with a hole is interesting.

 

[RiverRat3]

Thanks for your input. It was worth checking out. I'm going to take it back and put it back where I found it.