Thick as a Rock

Interesting Bits:
There is a faultline that runs through Scotland. In fact, where Edinburgh currently sits there were 5 ancient volcanoes, long since dead. North of this faultline the bedrock is granite. The buildings in this area are made from granite, mostly in a pink, white or grey color. South of the faultline the bedrock is a red sandstone, and the architecture there reflects the natural material. Its interesting to see the contrast that is nearly a clean dividing line between granite and sandstone buildings.
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