Crazy/Unique Boulder

[USAFM6]

On my land in Northern Wisconsin and next to my gravel pit I have this boulder (pictures attached). It's about 4 feet in diameter. This area is along the Bad River near Cayuga Wisconsin. Am just surprised that a rock like this could be created. Anyone have any idea how it was formed like this or what type of rock this boulder consists of? Would this be a marketable rock because of how unique it is? The gravel pit and the material in this area are glacial deposits so it could've came from anywhere north of Wisconsin as that's where the glaciers pushed from.

 

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[Eu_citzen]

It's called breccia and forms when something fragments rock and it gets "glued" together again.
But then, there are several types of breccias to. I suppose you might be looking at a volcanic breccia here.

 

[Eu_citzen]

Here is a reference shot of breccia, this one is still in the bedrock:


Hammer is to get an idea of size and is good half a meter long.

 

[Red James Cash]

Almost reminds me of pudding stone.