The structure, known as a togher, is an ancient timber trackway of the kind built across wet or marshy ground to allow passage where the earth itself would otherwise swallow a traveller whole. This particular example is a modest but precisely documented thing: just over two metres wide and roughly a third of a metre deep, running east to west through terrain that would have been treacherous without it.

Toghers were constructed using whatever timber was available and workable, and the engineering logic behind them is visible in the materials recorded here. The trackway is built from longitudinal runs of roundwood and brushwood, using ash and oak, laid over a transverse substructure of oak roundwood beneath. That layering, longitudinal on top and transverse below, is characteristic of what archaeologists classify as a class 3 togher, a more substantial and deliberate form of construction than a simple brushwood dump. Oak was favoured for its durability in waterlogged conditions, and the presence of ash alongside it suggests a practical use of whatever the surrounding woodland could provide. The bogland that ultimately preserved this structure is the same environment that would have made it necessary in the first place, the waterlogged, acidic conditions of an Irish raised bog acting as a near-perfect preservative for organic material that would long since have rotted away in drier ground.