There is nothing to see at ground level; the site announced itself through a crop mark spotted on an aerial photograph, the kind of ghostly impression left in growing grain when buried features alter soil moisture and affect plant growth above them. It is a place known primarily to surveyors and archaeologists, encountered not by walking through it but by reading the instruments pointed at it.

Three separate geophysical surveys have probed the site at various points, each prompted by infrastructure works in the area rather than by dedicated archaeological curiosity. The first, conducted under licence 07R0230 ahead of a proposed road realignment, was carried out by Nicholls in 2008 and revealed a penannular ditch, meaning a circular ditch with a deliberate gap rather than a fully closed ring, approximately 30 metres in diameter and opening with an entrance to the east. A penannular form is common among early medieval enclosures in Ireland, where the gap often marks a formal threshold into the enclosed space. A second survey, also tied to the road realignment immediately to the north and operating under an extended licence, identified a second circular feature nearby, roughly 25 metres in diameter, which Harrison in 2008 suggested may be associated with the first. A third survey, undertaken in 2014 by Bonsall in advance of the Greater Dublin Drainage Scheme, located the southern edge of the same enclosure and noted that the ditch fill may contain burnt remains, a detail that raises quiet questions about what activities once took place within or around it.

Drumnigh is not a site with a visitor path or an interpretive panel. Its interest lies precisely in what has not yet been resolved about it. Anyone curious about the location should be aware that the archaeology here is subsurface, confirmed through geophysical means rather than excavation, and the surrounding landscape has been subject to ongoing infrastructure pressure. The potential presence of burnt material in the ditch fill means the site retains some significance in any future planning assessments for the area. For those interested in the archaeology of early enclosures around the northern fringes of Dublin, the survey reports lodged with the relevant licensing authorities remain the most detailed record of what lies beneath this otherwise unremarkable patch of ground.