It comprises several small, almost conjoined, villages including Coed Ystumgwern, Llanenddwyn (Welsh pronunciationⓘ), Llanddwywe, Talybont and Dyffryn Ardudwy.

[1] The village of Dyffryn Ardudwy is situated on the A496 coastal road between the towns of Harlech and Barmouth and at the foot of Moelfre, part of the Rhinogydd range.

Here a pit was dug and in it were formally arranged several flat stones, various shards of pottery from at least four pots, charcoal and soil.

[6] Nearby, the Cors-y-gedol burial chamber stands amidst the site of ancient fields and settlements and the area affords glorious views of Cardigan Bay.

[7] St Dwywe's Church at Llanddwywe, within the community of Dyffryn Ardudwy, was built on an ancient mound which is at the end of the straight line followed by the road to Cors-y-gedol Hall.

This line runs straight and true to a cairn on the side of Moelfre, and it is suggested that this is a prehistoric man-made creation relating to the summer solstice rather than a more recent addition.