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Yr Wyddfa

mountain, Wales, United Kingdom

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Snowdon

  • Snowdon
    In Snowdon

    …highest of these peaks is Yr Wyddfa, which reaches an elevation of 3,560 feet (1,085 metres). Snowdon is composed mainly of slates and porphyries that date from the Ordovician Period (490 million to 443 million years ago). Intense glaciation has affected the entire locality, producing the ridges, cirques, and numerous…

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