There is nothing to see at Prumpelstown, at least not from the ground. What exists here exists only as a ghost in the soil, a circular ditch long since silted up and forgotten, visible only from the air under the right conditions, when a parched summer causes buried features to bleed faintly through the crops above them.

The site came to light in August 1995, when Dr. Gillian Barrett was conducting an aerial photographic survey of County Kildare and captured a cropmark, a subtle variation in the colour and growth of vegetation that betrays a buried ditch beneath, tracing the outline of a ring-ditch in the farmland at Prumpelstown. Ring-ditches are the eroded remnants of prehistoric burial monuments, typically all that remains of a round barrow or similar funerary structure once the earthen mound above it has been ploughed flat over centuries. What the photograph recorded was not one such feature but two, a pair of ring-ditches lying in close proximity to one another. The companion site is catalogued separately, but the pairing is significant; clusters like this often indicate a burial landscape of some antiquity, where the dead of a community were interred across generations in a shared area of ground. The cropmark image, referenced as GB95.FU.30, remains the primary record of the site's existence.