What is recorded here
Porth Dryw 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 in a deep marine environment. The area is notable for its well-exposed cliffs that provide insight into the geological history of the Welsh Basin.
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Places near here
Porth Penrhyn-mawrBay · 571 yd
Tywyn HirEnclosure Complex · 1359 yd
Landing Place, Porth Tywyn-MawrLanding Point · 1411 yd
Porth Tywyn-mawrBeach / strand · 1564 yd
St Mwrog's Church, LlanfwrogChurch · 1.2 mi
Porth Dre-fadogBeach / strand · 1.5 mi
Penrhos Betting Stand, HolyheadFolly · 1.8 mi
Salt IslandIslet · 1.8 mi
Beddmanarch BayBay · 2.1 mi_-_geograph.org.uk_-_5165623.jpg?width=1280)
Caer Gybi Roman FortFort · 2.3 mi
Holyhead Maritime MuseumMuseum · 2.3 mi
Newry BeachVisitor information · 2.6 miOther information
Photo: John S Turner · CC BY-SA 2.0