When road-widening work began on the N7 between the Maudlins Interchange and the Dublin/Kildare county boundary in 2003, the ground just north of the carriageway turned out to conceal something considerably older than tarmac. What emerged, in a carefully excavated rectangle measuring forty metres long and eight metres wide, was a palimpsest of agricultural activity stretching across the medieval and post-medieval periods, tucked immediately west of the Castlewarden Road in Blackchurch, Co. Kildare.

Archaeologists working under excavation licence 03E1837 uncovered a network of linear ditches running both east-west and north-south. These features, read through their stratigraphy, the layered sequence of deposits that allows archaeologists to establish relative chronology, pointed to multiple phases of use rather than a single moment of activity. The ditches appear to represent successive alterations to field boundaries or drainage systems, suggesting a landscape that was actively managed and periodically reorganised over generations. Most of the ditch fills contained medieval pottery, while later, shallower recuts held post-medieval material, indicating the land continued to be worked well beyond the medieval period. Equally telling were a number of irregularly shaped hollows cut into the natural subsoil and packed with mixed organic soils, also containing medieval pottery. These were interpreted as the voids left by tree boles after clearance, a sign that at some point this ground was woodland before it was farmed. The pottery recovered from the dump fills carries an additional implication: its presence close to agricultural features of this kind tends to suggest a settlement nearby, the discarded ceramics of a household spreading outward into the fields and ditches around it. No domestic structures were identified within the excavated area itself, but the inference is that a medieval settlement once existed somewhere in the vicinity.