A togher, in Irish tradition, is a raised trackway or causeway built across boggy ground, constructed to make movement possible through terrain that would otherwise swallow a traveller whole. The example at Derryvilla runs on a roughly north-south axis, straddling a modern road, and it survives only in fragments.

When investigators visited the site in 1981, the northern section had already been bulldozed flat, leaving only intermittent low humps in the ground that may or may not represent what was once there. To the south of the road, conditions were somewhat better. A low, wide bank was still visible, best preserved in the ten metres immediately adjacent to the road surface. It ran for around eighteen metres before a modern ditch interrupted it, then continued for a further fifteen metres, eroded and cut through by tree roots, the trees themselves having been felled to stumps by the time of the visit. The bank averaged roughly two metres across at its almost flat top, around four metres from slope base to slope base, and rose only about half a metre above the surrounding peaty field. Where the northern end of the feature once stood, a quarry now occupies the ground entirely. A burial ground discovered on the hill at the northern end of the linear feature raises the possibility that this togher served as a medieval access route to that site, a functional road for the dead as much as the living, worn into the bog over centuries of use and now almost entirely reclaimed by it.