The ringfort at Curristown in County Westmeath has been so thoroughly reduced by time and agriculture that it is now easier to see from the air than from the ground, appearing in aerial photography as a roughly circular cropmark pressed into the earth rather than raised above it. At roughly 41 metres north to south and 40 metres east to west, it was never a small enclosure, yet today it sits in low-lying, poorly drained pasture on only a slight rise, offering little in the way of commanding views across the surrounding landscape.

A ringfort, or rath, is an enclosed farmstead of the early medieval period, typically defined by one or more earthen banks and ditches and used for both habitation and the protection of livestock. By the time this example was formally described in 1970, it had been nearly levelled. What survives is a low scarp just 0.4 metres high, with vague traces of an intervening fosse, the ditch that once separated the inner bank from an outer one. That outer bank itself measures only about 0.2 metres on the interior and 0.4 metres on the exterior. No trace of the original entrance remains identifiable. The slight depressions noted outside the perimeter seem to owe more to water action than to any feature of the original construction, a reminder that the poorly drained ground here has been quietly reshaping things for centuries. The monument had already been recorded on the revised Ordnance Survey 25-inch map of 1913, which depicted it as a circular earthwork, suggesting that even then it retained at least enough definition to be mapped, though the intervening decades have since reduced it further.