South Stack Formation
Cambro-Ordovician geologic formation in WalesThe South Stack Formation is a sequence of Cambro-Ordovician metasedimentary rocks exposed in northwestern Anglesey, North Wales. The outcrop of this formation at South Stack was chosen as one of the top 100 geosites in the United Kingdom by the Geological Society of London, for its display of small-scale folding.
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South Stack
Island off northwest Anglesey, Wales

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Iron age settlement on Holy island, Wales
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Former transmitting station in Wales

South Stack Lighthouse
Lighthouse in Anglesey, Wales

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Tower on Holy Island, Anglesey, Wales
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Standing stones on Holy Island, Anglesey

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Cambro-Ordovician geologic formation in Wales