This one, outside Lisbane in County Limerick, does the opposite. It occupies a natural hollow in low-lying marshy pasture, hemmed in by waterlogged ground on all sides. That alone makes it worth a second look.

A rath, as this type of monument is also known, is an early medieval farmstead enclosed by one or more earthen banks and ditches, typically dating from roughly 500 to 1000 AD and built to define and protect a family's domestic space and livestock. What distinguishes the Lisbane example is the unusual distance between its two concentric earthen banks: seventeen metres separates the inner ring from the outer one, across a flat, waterlogged annular zone. The overall enclosure measures thirty-four metres in diameter. The inner bank survives best along its south-western to north-north-western arc, though heavily overgrown, with an external height of around 1.3 metres. The outer bank reaches 1.4 metres on its inner face and is most intact from south-south-west to north-north-east, but it has been levelled almost completely along its eastern side. Boulders have been dumped onto the outer bank's flat top at the west and north, and two gaps break its circuit at the south-south-east and south-south-west, the larger measuring over eleven metres wide. Whether these gaps are original entrances, later breaches, or both is not recorded in the survey compiled by Denis Power.

Accessing the interior requires some persistence. The area between the banks remains waterlogged, though the south-western arc offers marginally firmer footing. The interior itself is largely choked with briars, save for a small clearing near the centre. Visiting in late autumn or winter, when growth has died back, gives the best chance of reading the earthworks clearly, and dry spells will make the ground between the banks considerably easier to cross. The outer bank's flattened eastern section and the dumped boulders are the most immediately visible features from the field edge, though the better-preserved western arcs reward a full circuit.