
What is recorded here
Porth y Gwin is a small bay on the Isle of Anglesey, Wales, characterized by coastal rock formations primarily composed of Silurian greywacke and volcaniclastic rocks. These rocks formed around 440–420 million years ago during the Caledonian orogeny, and the site is notable for its well-exposed cliff sections that provide insights into the region’s complex geological history.
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Places near here
Porth RuffyddBay · 852 yd
Porth y GwyddelBay · 1036 yd
Dinas, Porth RuffyddPromontory Fort · 1498 yd
Copper Mine CreekCopper Mine · 1.1 mi
Standing Stones at Penrhosfeilw;Plas MeilwStanding Stone Pair · 1.2 mi
Ogof IronCave · 1.3 mi
South Stack Lighthouse ViewpointViewpoint · 1.3 mi
RSPB South Stack Visitor CentreVisitor information · 1.3 mi
Porth DafarchBeach / strand · 1.5 mi
Ynys Lawd / South StackIsland · 1.5 mi
White Horses, Trearddur BayHouse · 1.7 miOther information
Photo: Gordon Hatton · CC BY-SA 2.0