Why this matters
Porth Ruffydd on Ynys Môn (Isle of Anglesey) features coastal rocks primarily composed of Silurian greywacke and volcaniclastic deposits, formed around 440–420 million years ago during the Caledonian orogeny. The area is notable for its well-exposed sedimentary and volcanic rock layers, reflecting ancient marine and volcanic environments.
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Porth Ruffydd is shown as a bay on the public map of Ynys Môn / Isle of Anglesey. The saved point is the map point or the centre of its mapped shape.
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