Somewhere beneath a tilled field in Branganstown, Co. Kildare, lies what was most likely once a ringbarrow, a low circular burial mound ringed by a ditch, now so thoroughly worked over by centuries of ploughing that nothing visible remains above the soil. The only reason anyone knows it is there at all is a photograph taken from the air in 1970, which caught the ghost of the monument as a cropmark, a phenomenon where buried ditches and earthworks cause subtle differences in how crops grow above them, revealing ancient outlines that are otherwise invisible at ground level.

The aerial photograph in question, taken as part of the Cambridge University Collection of Aerial Photography, shows a small circular area defined by a fosse, or enclosing ditch, with an estimated maximum diameter of around fifteen metres. The shape is consistent with a ring-ditch or a ploughed-out ringbarrow, the kind of prehistoric funerary monument found across Ireland and Britain, typically associated with Bronze Age burial practices. There is a slight rise in the field at the location, which is about all the landscape offers by way of a physical echo of whatever once stood here.