What is recorded here

Ffos y Defaid is shown as a bay on the public map of Ynys Môn / Isle of Anglesey. The saved point is the map point or the centre of its mapped shape.

Ffos y Defaid on Ynys Môn (Isle of Anglesey) is a coastal rock feature formed from Silurian greywacke and mudstone, part of the island's extensive volcanic and sedimentary rock formations dating to around 440–420 million years old. The feature is notable for its association with the ancient volcanic activity of the Welsh Basin and the dramatic coastal erosion that has exposed these deep-time geological layers.

This does not grant access. Check current paths, opening conditions and ownership before entering.