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Mon 29 May, 2017 03:36 pm
I found this while fishing at a creek in Pa. This can't be natural? Wonder how old this is? Why is it like this? It's probably 1'-1/2 square. Thanks. Bill
@Billymons,
Looks like it was quarried to me. Is that a flat edge across the bottom?
@rosborne979,
I'd have to look at it when I get back there.
Is there a machine that would make these marks? Doesn't look like drill marks.