It is a togher, a timber trackway laid across wet or boggy ground to make crossing it possible, and this particular example is a modest but precise piece of ancient engineering, just 1.23 metres wide and less than a tenth of a metre deep.

The structure runs on an east-west orientation and is built from layers of hazel brushwood, placed both transversely and longitudinally, the thin stems averaging around two centimetres in diameter. At intervals, slightly heavier ash roundwood, averaging six centimetres across, was worked into the construction, presumably to add stability or bear additional load. Toghers of this kind are classified by their complexity and the materials used, and this is a class 3 example, meaning it represents a relatively simple form of the tradition. The use of locally available hazel and ash is typical of the type; builders worked with whatever woodland material was close to hand, cutting it to manageable dimensions and laying it down to spread weight across the soft ground beneath. The Irish midlands contain numerous examples of these trackways, preserved by the same anaerobic, acidic conditions in the bog that would have made the landscape so difficult to cross in the first place.