The ringfort at Clenor has been broken into repeatedly over the centuries, its two encircling banks interrupted by numerous gaps, yet enough remains to trace the original design with reasonable clarity. That persistence, quiet and unannounced in open farmland, is part of what makes it worth attention.

Ringforts, known in Irish as raths, were the most common form of rural settlement in early medieval Ireland, typically enclosing a farmstead within one or more earthen banks and ditches. The Clenor example is a bivallate rath, meaning it has two concentric banks rather than one, a feature generally associated with higher-status households. The enclosed area measures 48 metres in diameter, ringed first by an inner bank that rises to about 0.73 metres on its outer face, then by a fosse, a shallow ditch, followed by a more substantial outer bank standing 1.25 metres high, with a further external ditch beyond that. The sequence of bank, ditch, bank, ditch was both a practical boundary and a social signal, marking the space within as distinct from the land outside. At Clenor, the banks and the interior have since been planted with deciduous trees, which gives the earthwork an unexpectedly wooded character for a site sitting in otherwise open pasture.