What remains of the enclosing bank, roughly two metres wide, survives best at the north-west, where it still stands two metres high on its outer face. Across the rest of the circuit, from north-east around through south to south-west, the bank has been almost entirely levelled, leaving only the faintest trace in the ground.

The site is roughly thirty metres across and belongs to a broad category of earthen enclosures found throughout Ireland, sometimes associated with early medieval settlement, sometimes with ritual or agricultural use, and often frustratingly difficult to date without excavation. These enclosures, typically formed by a circular bank and internal ditch, were a fundamental unit of the early Irish landscape, ranging from modest farmsteads to the more elaborate ringforts of higher-status inhabitants. At Carrow, no entrance feature is visible, which may reflect the degree to which the earthwork has been disturbed over time. A modern road now cuts through the north-western arc of the site, almost certainly accounting for some of the damage, though the levelling across the southern half suggests longer and more gradual attrition, likely from centuries of agricultural activity on the surrounding upland ground.