Ty Mawr hut group (a.k.a. Cytau’r Gwyddelod, or Irish Huts)
These Iron Age remains of circular buildings can be found on Holy Island, near South Stack on Anglesey. The site consists of ten large circular stone rings (the remains of Iron Age huts) on the hillside with nine smaller rectangular structures (probably workshops for metal working) scattered among them, covering an area of up to twenty acres. Evidence has been found of human occupation at the site dating back to the middle Stone Age.
The site is managed by Cadw and excavations between 1978 and 1982 indicate that there were eight homesteads or farmsteads here, but only one or two were occupied at any one time. The settlement was an agricultural one, associated with ploughed fields in the vicinity. Grindstones for processing grain, along with dumps of limpets shells have been excavated, which indicates the important food sources of the inhabitants.