On the lower slopes of Vestrafiold, south-west of the megalithic quarry are the remains of a large, possible prehistoric, enclosure. Covering an area of around seven acres (2.8 hectares), the oval feature was defined by a “wall” of upright flagstones running around its perimeter.
Little is known about the site, which, in terms of construction, “is completely unlike any other enclosure in Orkney”.
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