This site was uncovered in the townland of Ballynacarriga during advanced testing for the main line of the N25 Youghal Bypass route at the intersection with the new Ballynacarriga Access Road. The site is an enclosed settlement of Early Christian period date. It was situated on the south-facing slope of a small valley, both on the slope and the valley floor. The site was poorlypreserved with no working surfaces or organic remains surviving; the taphonomic factors of variable topsoil cover and poor soil preservation in this intensive agricultural area have contributed to this. For descriptive purposes, the site is divided into three areas. Area One was the main enclosed area which is roughly square in plan with right-angled corners; three of the corners were revealed during excavation. The fourth corner in the southeast was beyond the CPO line and was not encroached upon. The enclosed area is 35m north?south by 40m east?west to the eastern baulk. The enclosing ditch varied in width and depth, tending to be narrow and V-shaped on the slope to the north; wide and U-shaped in the south on the valley floor. Internal features included a single almost centrally-located circular house structure of stakeholes, diameter 8.6m. This structure was then truncated by a rectangular structure. A further four potential structures were tentatively identified. A complex area of stratigraphy was located to the south of the circular structure and involved three phases of activity. Two souterrains were uncovered within the enclosure, one U-shaped in plan and the other J-shaped. Isolated features included a possible sunken oven, the damaged remains of a corn-drying kiln and several large pits. The southeastern part of Area One had been heavily impacted upon by modern drainage activity. Area Two represents a larger enclosing ditch that appears to offshoot northwards from the main enclosure, encircling more structural features. This ditch ran northwards for approximately 50m and then turned west for 30m to a termination; the ditch cut was a deep U-shape. Three circular structures were uncovered, all were of shallow slot trench construction and were in a line manner going up slope. A two-phase kiln was excavated close to the southernmost structure and a third nearby. Other features include two isolated linear cuts that predated the construction of the ditch, a cooking pit and a possible souterrain. Area Three contained a small pit of unknown date that may have had a timber lining. There was no evidence to suggest that it may have been a trough-like feature, indicative of a fulacht fiadh. There was no stratigraphic relationship between the enclosed site and this pit. The findings at Ballynacarriga represent a substantial farmstead of long duration from the Early Christian period. The profile of radiocarbon dating of features of both enclosures suggested activity from the fifth to the eleventh centuries AD. This almost square-shaped main enclosure and later extension site is part of a group of rectangular enclosures, locally known as ?square lioses? in East Cork and about which little is known. This substantial site is an important new addition to the corpus of newly-excavated sites of the Early Christian period in Ireland.