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540 Ma

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5 locations recorded with this geological age.

  1. Bodowyr Burial ChamberNeolithic megalithic site. Stone used for the construction of the cromlech, a burial chamber which would on…MetamorphicSchistnear Llanfairpwllgwyngyll
  2. Bryn Celli DduNeolithic megalithic site. The stones used to construct this passage grave are from the underlying outcrop…MetamorphicSchistnear Llanfairpwllgwyngyll
  3. Plas Newydd DolmenThe stones used to construct the burial chamber would have been collected from the local area.MetamorphicSchistnear Llanfairpwllgwyngyll
  4. St Mary's Church Menai BridgeMain building stone. The stones used to construct this building are from the local outcrop of high-pressure…MetamorphicSchistnear Llanfairpwllgwyngyll
  5. Victoria HotelMain building stone. The stones used to construct this building are from the local outcrop of high-pressure…MetamorphicSchistnear Llanfairpwllgwyngyll