These structures, constructed from timber, brushwood, or other organic materials laid directly onto the bog surface, represent some of the earliest engineered roads in Ireland, and the bogs that swallowed them have preserved them in remarkable condition for centuries or even millennia. This particular example is classified as a class 3 togher, a designation that refers to its method of construction, typically a more modest or lightly built form of trackway compared to the elaborate plank roads found at sites like Corlea, also in County Longford.

The site came to notice during a field survey carried out in 1988, recorded through the personal communication of B. Raftery, a scholar closely associated with Irish wetland archaeology and bog road research. The work was part of a broader effort by the Irish Archaeological Wetland Unit, based at University College Dublin, to systematically document the extraordinary concentration of ancient trackways preserved in the Irish midland bogs. County Longford sits at the heart of this landscape, and the raised bogs of the region have yielded evidence of human movement and activity stretching back thousands of years. The Corlea Trackway, dated to 148 BC and only a short distance away, is among the most celebrated examples in Europe, giving some sense of the archaeological significance of the wider area in which Derrynaskea sits.