It is only a metre wide and a little over six centimetres deep, but its orientation, running east to west with quiet deliberateness, and the clear marks of human craftsmanship on its timber, speak to a level of effort and intention that is easy to underestimate.

The structure is classified as a togher, the Irish term for a bog road or trackway, typically constructed from timber, brushwood, or peat to allow people, animals, and goods to cross otherwise impassable wetland. This particular example is a class 3 togher, meaning it is made from longitudinal brushwood rather than the heavier planking or split logs used in more elaborate constructions. What makes Derryoghil notable is the woodworking evidence. The hazel and birch were not simply thrown down; they were worked, shaped to purpose. Someone, at some point, took care over this crossing. The Irish Archaeological Wetland Unit at University College Dublin, which recorded many such structures across the Irish midlands, documented this one as part of a broader effort to catalogue the remarkable density of ancient trackways preserved in Irish bogland, where waterlogged, oxygen-poor conditions can keep organic material intact for thousands of years.