What is recorded here

Porth yr Hwch Fach is a small bay on the Isle of Anglesey, Wales, featuring coastal rock formations typical of the area's Lower Palaeozoic sedimentary and volcanic rocks, around 500 to 470 million years old. The rocks were formed during the Cambrian and Ordovician periods through deposition and volcanic activity, and the site is notable for its contribution to understanding the geological history of North Wales.

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