Nutting stone or geofact?

[EricTheCat]

If I were a betting man I would say this is natural, but curious enough I thought I should ask. It's a really cool rock either way. I found it walking my favorite field today. Perhaps it is a piece of Fred Flintstone's bowling ball. Thanks for looking.

 

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[EricTheCat]

In further searching this kind of resembles a fire stone. Probably more so than a nutting stone. Pits are a little abrupt and steep it seems to have been caused by cracking open nut shells.

I have found other natural rock with similar pits but the pits have a very different look (smooth/no detail). Also the position of the pits on this one look more useful being in the "cup" of the stone. The lined texture inside the pits on this one appear to be uneven wear from different layers of the rock having different hardness.

I still suspect it is probably natural. Mother nature has done some wild things here with stone. With all the geofacts I inadvertently post here you would be surprised by how curious some of the geofacts are that I have found and not asked about.

As always, I much appreciate any opinions. Happy hunting.

 

[monsterrack]

That is a cool rock but I'm going with natural and I would have packed it out.

 

[stefen]

JUSTAFR