tags: Callanis Stone Circle, Callanish, Isle of Lewis Scotland, Image of the Day
Detail of one of the Callanish stones. The stones are Lewisian gneiss, formed approximately 2.5 billion years ago.
Image: Dave Rintoul, Summer 2008 [larger view].
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This is a pretty good example of lack of scale. Is this taken from space? Or with a microscope?