What is recorded here
Porth Helygen on Ynys Môn (Isle of Anglesey) features sandstone and limestone rocks of Carboniferous age, formed around 340–300 million years ago through sedimentary deposition in shallow marine environments. The cliffs are notable for their accessible geological sections and fossil content, reflecting the island’s rich Carboniferous geological history.
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Places near here
Porth yr AberBay · 522 yd
PorthygwichiaidBay · 847 yd
Bryn Fuches Farmhouse, Llys Dulas, AngleseyFarmhouse · 1076 yd
Ynys DulasIsland · 1163 yd
Old Llanwenllwyfo ChurchRuins · 1208 yd
Porth y CorwglLanding Point · 1.4 mi
Mynydd EilianMountain / peak · 1.4 mi
Traeth Dulas, Hulk / WreckWreck · 1.4 mi
Penysarn War MemorialMemorial · 2.1 mi
Lligwy BeachBeach / strand · 2.2 mi
Morris Brothers Memorial; Morusiaid Memorial, City DulasCommemorative Monument · 2.5 mi
Morris Brothers MemorialMonument · 2.5 miOther information
Photo: Eric Jones · CC BY-SA 2.0