Cobblestones vs Setts. These two types of traditional road surfaces are often confused, but they're easy to tell apart. In this photo from the Applecross Basin on the Forth and Clyde Canal in the north of Glasgow, there are cobblestones on the left and setts on the right. Cobblestones are natural, rounded, irregularly-sized rocks, while setts are quarried and shaped stones, usually made from granite, of a uniform size and shape.
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