Walk across the field on the low east-west ridge north of the river and the land gives nothing away; no earthworks, no raised outlines, no stones. And yet, captured in satellite imagery taken between 2011 and 2013, a whole field system materialises from the air, its boundaries emerging as crop marks, the kind of subtle tonal variation in growing vegetation that betrays buried features below the soil surface. Crop marks form when underground walls, ditches, or disturbed ground affect how plants grow above them, producing differences in colour or height that are invisible at eye level but legible from altitude. In this case, what the imagery reveals is the ghost of a landscape that once organised this ground into working agricultural space.

The field system at Murragh sits at the highest point of the ridge and may be connected to a nearby circular enclosure recorded in the Sites and Monuments Record as DU007-066. Circular enclosures of this kind are commonly associated with early medieval settlement in Ireland, often forming the defensive or boundary ring of a farmstead or small settlement, sometimes referred to as a ringfort. The possible relationship between the field system and the enclosure was noted by T. Condit, and was compiled into the record by David O'Connor, with a later update by Christine Baker. Whether the two features are genuinely contemporary, or simply neighbours in the landscape, remains an open question; no excavation appears to have resolved it.

Visitors to Murragh should not expect a conventional heritage experience. The site has no signage, no fencing, and no surface remains whatsoever. Its interest lies almost entirely in what remote sensing has revealed rather than anything you can observe in person. The satellite images, taken by Digital Globe and available through the archaeological record, are really the primary document here. That said, the ridge itself offers a useful vantage point, and understanding that you are standing on ground whose layout was once planned and maintained by people farming it, probably well over a thousand years ago, gives the unremarkable-looking field a different quality. Those interested in the crop mark evidence should consult the SMR file entry, which holds the orthoimage and supporting documentation.