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Newgrange: quartz and granite wall
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Re: Newgrange: quartz and granite wall
Jul 17, 2016, 21:17
CianMcLiam wrote:
GLADMAN wrote:
tiompan wrote:
Without the steel reinforced concrete support the wall would collapse .

That has always been my understanding. From a purely engineering point of view, are there any known prehistoric structural techniques that could have achieved the fa├žade we now have?

Yes, similar walls were found at Petit Mont, Gavrinis, Barnenez etc. A good intact section of similar walling can still be seen at Baltinglass Hill.

They are not similar . The walling consists of rectangular slabs which are totally unlike the stones /cobble shape of the quartz .
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