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Originally posted by Chadwickus
Petrified coral comes to mind.
Do you have any close up shots?
Originally posted by KRISKALI777
reply to post by AccessDenied
Hi, I'm no geologist, but does your locale experiance any volcanic activity.
It looks like some kind of Igneous rock, form through heat.
Looks almost like the colour of limestone, is it hard, or is it brittle?
Was it found close to any nearby construction?
Igneous rock is very porous, due to the fact that it is created through heat. this causes air bubbles in the rock.