Hermione Wrote:
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>

Quote

It’s worth looking at our forefathers’
> construction techniques if you want to know how
> technologically advanced they were. One example is
> a technology that was allegedly used to damage the
> stones, leaving strange marks behind.

>
> [factleaks.net]


Where is this suppose to be in the GP? I presume one of the 'air shaft'? or is it some other location?