In the townland of Woodlands in Co. Kildare, there is a monument that no longer exists in any physical sense, and arguably had not existed in any visible form for decades before it was finally erased entirely. What survives is a single aerial photograph, reference GB91.DX.09, showing the ghostly outline of a ring-ditch emerging from a cultivated field as a cropmark, the kind of faint circular shadow that ripening grain occasionally betrays when the soil beneath holds traces of an ancient ditch.

A ring-ditch is generally understood to be the buried remnant of a circular trench, often all that remains of a Bronze Age funerary mound after centuries of agricultural levelling have removed the raised earthwork above it. This particular example was identified in 1991 by Dr. Gillian Barrett during an aerial photographic survey. The photograph captured not just the ring-ditch but also a curvilinear enclosure immediately to its east, the two monuments lying in close proximity in what had already, by that point, become a ploughed-flat landscape. Neither feature was visible at ground level; both had been reduced to subsoil traces readable only from the air, under the right conditions of crop growth and light.

Sometime between 2000 and 2005, quarrying activity destroyed both monuments entirely. Whatever stratigraphic information the buried ditches might have held, whatever finds or organic material might have been preserved within them, is now gone. What remains is the 1991 photograph and the record it generated, a document of something that was already barely there when the camera caught it.