It is an easy detail to miss, and yet it suggests that what looks like a simple grassy mound at Clashbredane was once a more deliberately constructed boundary than the eroded landscape now implies. The ringfort, a type of enclosed farmstead built predominantly during the early medieval period in Ireland, roughly between the fifth and twelfth centuries, sits on a south-facing slope in pasture, its oval outline measuring around 41 metres east to west and 33 metres north to south.

The enclosing bank survives to a maximum height of 2.8 metres, which is a respectable survival for a structure of this kind. A fosse, the external ditch that would have reinforced the sense of boundary and made the enclosure harder to breach, runs around the outside, though it has silted down to about 0.7 metres deep. On the eastern side, the bank retains traces of internal stone-facing, and the entrance to the southeast is also stone-faced, giving some indication of the care originally put into its construction. The interior of the enclosure slopes downward toward that entrance, a common arrangement in raths. A slight irregularity on the outer face of the eastern bank may be the result of material slippage over the centuries rather than any original design feature. What is particularly telling is the field boundary on the northern side, which respects the line of the enclosure rather than cutting across it, suggesting that later agricultural organisation simply worked around the older monument rather than obliterating it.