Look closely at the stones and you will see how much quartz they are composed of.
Similar rock is found round the south of the island. Around 65 million years ago volcanic eruptions around Arran forced molten lava through fissures in the sandstone. The extreme heat metamorphosed the sandstone, baking it white and producing a quartzite rock.
It makes the stones sparkle really beautifully through the moss.
This must have been an impressive circle when it was complete.
Signposted and near a road, only three stones remain of seven which were reported in the late 18th century. But even in its depleted state, this is still impressive.
One of the stones measures 2.8m high x 2.2m x 1m and has been split by frost. The other two stones are 2.2m high.
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Posted by greywether
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