Ty Mawr Hut Circles are to be found in fields close to South Stack near to Holyhead on Holy Island, Anglesey. (Also known as the Cytau'r Gwyddelod, or Irish Huts, although there is no evidence of Irish occupation.)
The remains consist of 10 large round dwellings interspersed with smaller buildings that are partly below ground. Some of the huts are over 20 ft, 7 metre in diameter with thick low walls.

There is archaeological evidence that the site was occupied from the Middle Stone Age, Neolithic Age, and Bronze Age, but the visible stone buildings were occupied from the Iron Age through to the 6th Century AD. The land was worked during the Roman  period as evidenced by the finding of Roman coins during excavations in the 19th Century.

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There are several other sites of interest on Holy Island, all within just a few miles of the Hut Circles. The closest is the South Stack Lighthouse and RSPB Reserve literally just across the road. Within a mile or so you will find the Penrhos-feilw Standing Stones, a pair of 10 ft high stones from the 2nd millennium BC.

Another mile or so south west and you come across Porth Dafarch a picturesque beach with evidence of early settlements in the fields nearby. Continue on past Trearddur Bay and you come to Rhoscolyn where, with a bit of effort, you will find the Holy Well of St Gwenfaen.
And a short trip into the town of Holyhead rewards you with the ancient Church of St Cybi, close to, and overlooking, Holyhead harbour.

Directions : [ Map of Ty Mawr Hut Circles location ]

From the Menai Bridge continue on the A55 toward Holyhead. Leave A55 at Junction 3 to Valley. Take B4545 to Trearddur Bay, take coast road west past Porth Dafarch to South Stack. Park in the RSPB Reserve car park. The Ty Mawr Hut Circles are in the fields opposite.