This is a ditch barrow, a type of prehistoric funerary monument consisting of a low earthen mound enclosed by an outer ditch, known as a fosse. The example at Moanmore is modest by any measure, just five metres across, with a gently sloping earthen scarp barely twenty centimetres high, yet its form is deliberate and ancient, a structured piece of the prehistoric dead placed into ground that farmers have worked ever since.

The monument was picked out from the Bruff Survey aerial photograph numbered 5/2090, which gave surveyors enough detail to map its dimensions with some precision. The enclosing fosse measures 1.6 metres wide overall, narrowing to 0.6 metres at its flat base and reaching only about ten centimetres deep, so shallow in places as to be almost imperceptible at ground level. The northern to east-north-eastern arc of the fosse is the best preserved section. Moving around towards the south-west and west-north-west, it becomes increasingly difficult to trace, and along one stretch it disappears entirely beneath a modern field boundary running roughly north-north-west to south-south-east, its line having followed or obscured the ancient ditch. A companion barrow lies roughly fifty metres to the south-south-east, suggesting this part of Moanmore once carried more significance in the prehistoric landscape than its present, pastoral calm would suggest. The interior of the mound is level, dry, and free of overgrowth, which is itself a small curiosity, a cleared centre inside a ring that time and agriculture have done their best to erase.