The boundaries, long since ploughed flat or absorbed into later land use, survive as crop marks, subtle variations in vegetation growth or colour that betray the presence of buried features beneath. It is a common enough phenomenon in Irish archaeology, but no less arresting for that: a whole arrangement of former fields, organised and worked by people whose names are unknown, discernible only from satellite imagery.

The field system came to wider attention through a Digital Globe orthoimage taken between 2011 and 2013, which also revealed an oval-shaped enclosure in the same area, recorded separately in the Sites and Monuments Record as DU004-064. The detail was noted in the SMR file and communicated by T. Condit, with the record compiled by David O'Connor and uploaded in November 2013. Oval enclosures of this type frequently belong to the early medieval period in Ireland, sometimes associated with settlement or agricultural activity, though the precise date and function of this particular example has not been established from the available notes. What makes the combination of features interesting is the suggestion of an organised landscape, fields and enclosure together hinting at a worked environment rather than an isolated monument.

Rath Great is a townland, and visitors arriving in search of something visible on the surface are likely to be disappointed. There is nothing to mark the field system on the ground; its presence is recorded rather than displayed. The most accessible version of this site is the orthoimage itself, rather than the field. For those with an interest in landscape archaeology, that is part of the point: much of what survives of early land use in Ireland exists at this threshold between visible and invisible, detectable only under particular conditions of light, crop, and season. If you do visit the area, the terrain itself carries the quiet logic of an old agricultural landscape, even where individual features have long since ceased to be readable by eye.