(1) Prehistoric (Bronze Age?) round house?
This roughly circular structure is just a few metres from the small stream called Ffos Dyrysienog, one of the headwater streams of the Afon Brynberian. This is the Dyfed Archaeology description:
LONG DESCRIPTION A possible sheepfold situated on a northwest facing slope of Banc Llwydlos at 250m above sea level, lying to the east of a stream. It is sub-circular in shape and of dry stone construction whose walls survive to between 4/5 courses high. The enclosure has an approximate diameter of 8.9m. There is an entrance on the west (facing the stream) measuring 1.2m wide. It is possibly a later re-use of an earlier structure. It was recorded by P Drewett in 1984 during field survey and listed as ‘hut cluster (circular stone huts)’ (site no 109).
Depicted as 'sheepfold' on OS County series Pembroke. XI.9 1889 & as 'old sheepfold' on 2nd edition (1907).