Another odd rock found behind stone wall

[Kathleen Anne]

I found this very unusual rock behind a stone wall of petrified wood on my property in the Puget Sound area of WA state. Is it just a rock? Or perhaps something else?
Thank you. ploaded more pictures

 

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[Treasure_Hunter]

Appears natural. When asking questions on rocks it greatly helps to post pictures of all sides, no picture of other side posted.

 

[BC1969]

Fossilized Sasquatch dung that another Sasquatch threw at the face of another.

Maybe just a rock hit by a chisel plow a few times ?

 

[Kathleen Anne]

I just added some more pictures, thank you.

 

[Kathleen Anne]

I like your first reply

 

[BC1969]

Looks even more like plow damage to me.
That's just a guess though.

 

[DaveSmith]

I believe I see a definite patina difference between the "ring" between the hump and the outside edges. The hump and outside edge have a green tint to them where as the inner ring is different.
The last set of pictures of the edge view seem to show a dished out middle in the hump.
The outside shape of the stone resembles some manos I have
Being found next to a stone wall, it could have been a mano that was then altered by someone during the building of the wall. 18 and 19 century settlers used stones also for different things.
I'm not saying a native American made it in the first place but it does, in my opinion seem to have been altered by man but for what purpose I have no idea.

 

[Tdog]

It looks natural to me. No indication of man forming it into a useful object.