The enclosure at Carrow is roughly oval, measuring about 43 metres north to south and 37 metres east to west, and it is defined by a bank so worn down in places that it barely rises above the surrounding soil. At its clearest, on the western side where a stream runs alongside it, the bank is just over three metres wide and less than half a metre high. There is no discernible entrance, though that absence may say more about erosion than original design.

Enclosures of this kind are a familiar feature of the Irish early medieval landscape. Typically formed by a raised earthen bank, sometimes with an outer ditch, they once defined farmsteads, religious sites, or ceremonial spaces, and Ireland contains thousands of surviving examples in varying states of preservation. The one at Carrow is at the more degraded end of that spectrum. Cattle movement across the edge has worn the bank down to little more than a scarp in places, and the NW and N quadrants have been absorbed into later field boundaries, their earthen banks merging with the earlier structure until the two become difficult to read as separate things. What gives the site a quiet point of interest is its setting and its company: the ground is low-lying and seasonally wet, which is an unusual choice for a habitation site and may suggest a different original function, and a second enclosure of similar type sits roughly a hundred metres to the north, hinting that this corner of the valley was once more deliberately organised than it now appears.