Pre-development investigations in 2001 revealed that this local lane sits on almost exactly the same axis as the southern boundary ditch of a medieval field system, raising the possibility that the lane has been preserving the ghost of an agricultural layout for several centuries without anyone necessarily realising it. The field system itself, identified adjacent to Bremore castle, consisted of two parallel ditches running east to west, roughly 150 metres long and 50 metres apart, enclosing a plot that was worked intensively enough to leave clear traces in the soil.

Analysis of charred plant material recovered from the furrows identified cereal grains, principally wheat, barley, and oats, alongside legumes, a combination that points to deliberate crop rotation rather than single-crop farming. Leinster Cooking Ware and 13th to 14th century local pottery came from a shallow, flat-bottomed feature interpreted as the remains of a manure heap, suggesting the ground was being systematically fertilised well before the formal field boundaries were even established. Leinster Cooking Ware is a type of medieval Irish pottery associated broadly with the east Leinster region, and its presence here alongside later local wares helps date the sequence of activity. By the 16th to early 17th century, according to research by O'Carroll, these productive agricultural fields may have been converted into parkland or an orchard, a transition that often accompanied changes in estate management during that period.

The site sits in the vicinity of Bremore castle on the north County Dublin coastline, and much of what was uncovered came to light only because of pre-development groundwork carried out in 2001. There is no formal visitor infrastructure around the field system itself, and the evidence for it lies largely below ground. Hamlet Lane, however, remains a navigable local road, and knowing that it may follow the line of a medieval field boundary gives even an ordinary drive along it a different quality. The area is best appreciated with some prior reading, since the landscape above ground gives little away.