In a field in Bodenstown, County Kildare, there is a monument that most people walking past would never see. It appears only from above, and only under the right conditions: a partial arc of darker growth tracing the outline of a circular ditch roughly nine metres across, pressed into the crop like a ghostly signature. This kind of feature is known as a cropmark, and it forms when buried archaeology affects how plants grow overhead. Where a fosse, an ancient ditch, was cut into the subsoil and later filled with looser, more moisture-retentive material, crops above it tend to grow taller or greener, particularly during dry spells when the contrast with surrounding vegetation becomes most pronounced.

The Bodenstown feature was identified not through excavation or ground survey but through aerial photography, specifically imagery captured by Google Earth on 28 June 2018. The circular shape defined by this fosse is consistent with a ring-ditch, a type of prehistoric monument typically associated with burial or ceremonial activity. Ring-ditches are often the ploughed-down remains of round barrows, earthen mounds raised over the dead, where the surrounding ditch is now the only surviving trace. The feature at Bodenstown was noted by Caimin O'Brien, working from details provided by Seán Sourke, and recorded in early 2019. Only a portion of the circle is visible in the aerial image, suggesting that part of the feature may have been destroyed or that crop conditions only revealed part of the fosse at the time the photograph was taken.