What in the world is this??

[Freemindedclark]

It is about the size of a soda can in length.

 

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[justonemore]

A rock

 

[sandchip]

Yep, 'fraid so.

 

[quito]

Another of natures amazing creations.

 

[arrow86]

Like others said natural I'm sure there's a technical name for the concretion build up , sometimes I'll bring one home for the rock garden ..... I have found a few that looks like a white shoelace crisscrossed the entire length that looks pretty neat but just natural

 

[Freemindedclark]

I just thought it to be weird that the whatever it is wraps all the way around and appears to be tied on one side.

 

[The Grim Reaper]

Natural stone

 

[rock]

It looks to be an inclusion sometimes rocks will have quartz running through them. The black flint here will have from time to time white quartz lines running threw it. I think I have a point that shows it. Think the white is on the left of the point.