What makes it worth pausing over is precisely its state of collapse: the near-circular enclosure, roughly 38 metres north to south and 37 metres east to west, survives now as little more than a grassed-over bank of earth and stone, most legible on its western side where the original form holds best. A slight external fosse, the shallow defensive ditch that would once have ringed the outside of the bank, can still be traced from the north-north-west around through the north to the north-east, though only just.

A rath, as this type of monument is classified, is an enclosed farmstead of the early medieval period, typically dating from somewhere between the sixth and twelfth centuries. They were built across Ireland in their thousands as homesteads for farming families, their earthen banks and ditches marking out a protected domestic space rather than a military fortification in any formal sense. The Tisaxon example belongs to that enormous, mostly anonymous population of rural enclosures that once organised the Irish countryside, the majority of which now survive only as faint earthworks like this one, their original inhabitants entirely unrecorded.