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Newgrange

Newgrange: quartz and granite wall

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CianMcLiam C
CianMcLiam Jul 17, 2016 21:42:37
Replying to tiompan

Not sure I'd call them rectangular slabs, most use a variety of shapes and sizes, from very small stones to maybe a foot or so max.

Here's Barnenez: https://www.dropbox.com/s/ba02wpuquxr04hy/80063000.jpg?dl=0
Petit Mont:
https://www.dropbox.com/s/865u2ebuz6r831w/untitled.png?dl=0

T tiompan
tiompan Jul 17, 2016 23:29:08
Replying to CianMcLiam

There are a lot of rectangular slabs in there and the walls are close to vertical and holding up without the aid of concrete and steel . In contrast the Newgrange cobbles need the steel and concrete and much of the original putative components were unusable .