Six small enclosures sit in a field near Walterstown, invisible to anyone walking past. No bank, no ditch, no upstanding feature of any kind breaks the surface of the pasture. The only evidence that something once occupied this low ridge in County Kildare comes from the air, where the soil betrays itself through cropmarks, the faint differential growth of grass and grain that occurs when buried features alter drainage and soil composition beneath. Cropmarks of this kind are often the sole surviving trace of enclosures that were levelled centuries ago, their physical form entirely consumed by agriculture, leaving only a chemical memory in the ground.

The site is one of a cluster of six subrectangular cropmarks recorded together, suggesting that whatever activity took place here was repeated or extended across a small area rather than concentrated in a single structure. Subrectangular enclosures of this type, roughly rectangular with slightly irregular corners, appear across Ireland in a variety of periods and contexts, from early medieval farmsteads to prehistoric field systems, and without excavation it is difficult to assign a precise date. What the aerial photograph does confirm is that the ridge on which they sit is low, level, and well drained, the kind of ground that would have been attractive for settlement or agricultural organisation across many different eras. When the site was visited on the ground, heavy grass cover obscured any trace of the underlying features entirely.