This ancient ringfort, known locally as Port Eachrann, consists of two concentric stone walls that once provided defence and shelter for an early medieval homestead. With an internal diameter of 15 metres, the inner enclosure would have contained the main dwelling and perhaps some outbuildings, whilst the outer wall created an additional defensive barrier and space for livestock or storage.

The construction technique reveals the practical ingenuity of its builders; rather than hauling stones from distant quarries, they incorporated natural rock outcrops into the outer wall’s circuit, blending human engineering with the existing landscape. Today, sections of the original wall facings remain visible in both the inner and outer walls, offering glimpses of the careful stonework that has survived perhaps a millennium or more of Atlantic weather.

These cashels were typically built between the 5th and 12th centuries AD and served as fortified farmsteads for prosperous families. The double walls at Port Eachrann suggest this was a particularly well;defended site, possibly belonging to someone of local importance. The location overlooking Teelin Bay would have provided both strategic views across the water and access to marine resources, whilst the surrounding land offered grazing for cattle; the primary measure of wealth in early medieval Ireland.