A togher, as these ancient bog roads are known in Irish, is a trackway built across wet or waterlogged ground using timber, planks, and whatever materials were close to hand. The one at Baunaghra is not a simple matter of a few planks thrown down in haste. When turf-cutters first broke through to it in 1958, they uncovered a structure running east to west for approximately 495 metres, built from heavy longitudinal timbers laid roughly parallel, about two metres apart, with transverse planks laid across them and held in place by pegs or stakes. A layer of stones and sandy gravel ran along the centre, giving the road a firmer, more durable surface underfoot.

The site was subsequently excavated by Rynne, and later examined again during a peatland survey carried out in 2006 by Archaeological Development Services. That later work recorded a section of poorly preserved transverse plank trackway, 63 metres long, supported by longitudinally laid brushwood and roundwood, with pegs identified at several points. Radiocarbon dating of this section returned a date of around 1033 BC, placing it firmly in the Bronze Age. A related timber trackway identified nearby was dendrochronologically dated, using tree-ring analysis, to somewhere between 1190 and 820 BC. The 2006 survey suggested that what appear to be separate recorded features may in fact all be parts of a single, much longer road, their apparent fragmentation a consequence of the bog becoming overgrown and obscuring the connections between them. Taken together, the surviving evidence points to a substantial and deliberate piece of prehistoric infrastructure, not a temporary crossing but a maintained route through what was clearly difficult, saturated terrain.