Anglesey Coalfield, Malltraeth Marsh
Facts and practical information
The Anglesey Coalfield is a minor British coalfield. Although it is situated in north-west Wales, this isolated coalfield on Anglesey is not usually considered to form a part of the North Wales Coalfield which lies in Flintshire and Denbighshire in north-east Wales although both measures were formed during the Carboniferous period. Stretching from Nant and Hirdrefaig in the Pentre Berw area along Cors Ddyga and under the sea at Malltraeth village which was called 'yr Iard' or 'Iard Malltraeth'. On the western side of the Afon Cefni lies Cors Malltraeth. It was named after Cwmwd Malltraeth which was the old Welsh way of dividing the Isle of Mona by the Welsh Princes and the Church. Both coalfields measure around 9 miles long. ()
Malltraeth Marsh
Anglesey Coalfield – popular in the area (distance from the attraction)
Nearby attractions include: Oriel Ynys Môn, Caer Lêb, St Deiniol's Church, Llangefni Town Hall.