Weird rock??? (Pic included)

[Huntin&Fishin]

So I think i've narrowed it down to a Scoria rock, what do you guys think? But while doing research it says scoria rocks are a volcanic rock, when they erupt the molten lava in the air cools down and forms this and thats why the air bubbles are there. This rock is quite light and I know they are used for some landscaping prodjects but my main question is How did it get in the middle of the woods? They say valcanos were in MN 1100 million years ago so is this rock from that!?

[hydro]

Where in the state did you find it? It looks a lot like industrial slag.

[nunzio]

Looks like a piece of grill brick to me????

[GFNER]

Looks like a batch of my wifes cookies left in the oven too long. (sorry I couldn't resist)

[Huntin&Fishin]

Well it was on an island on a river, central mn, defenetly not a rock, try a search for "Scoria" for better images

[DARK30]

Could be slag from an old steam engine. Any railroad tracks nearby?

[itchmesir]

it's not scoria.. as the vesicles are larger than 1mm in size.. which is a key component in identifying scoria