What is recorded here
Porth Wnal on Ynys Môn (Isle of Anglesey) features coastal rocks primarily composed of Silurian greywacke and mudstone, formed around 440–420 million years ago during sedimentary deposition and later uplift. The area is notable for its exposure of ancient marine sediments and its position within a landscape shaped by glacial activity and coastal erosion.
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Places near here
Wylfa Nuclear Power StationNuclear Power Station · 447 yd
Cemaes Bay Lifeboat StationLifeboat Station · 489 yd
Porth yr OgofBay · 610 yd
Wylfa Head FlagstaffNavigation Aid · 664 yd
Cemaes BayBay · 1.0 mi
Traeth BachBeach / strand · 1.3 mi
Cemaes Bay War MemorialMemorial · 1.3 mi
Cemaes Heritage CentreVisitor information · 1.4 mi
CemaesVisitor information · 1.4 mi
Cemaes WindmillWindmill · 1.4 mi
Charles Henry AshleyMemorial · 1.4 mi
Traeth MawrBeach / strand · 1.4 miOther information
Photo: Eric Jones · CC BY-SA 2.0