These are toghers, a type of trackway laid across boggy or waterlogged ground using timber, brushwood, and whatever materials were close to hand. Twenty-nine of them, including some possible examples, were identified in Killoran townland during field survey work recorded by Gowen in 1999, making this one of the more concentrated clusters of such structures found in the county.

The engineering, if that word is not too grand for it, varied considerably from one togher to the next. Fifteen were built from brushwood alone, essentially bundles of cut branches pressed into the soft ground to create a firm surface underfoot. The remainder combined brushwood with roundwood, and three showed evidence of pegs or stakes, suggesting a more deliberate effort to anchor the structure in place. Wood species identified across thirteen of the toghers included alder, ash, birch, elm, hazel, holly, and mountain ash, with ash and hazel appearing most frequently, both of them common in the scrubby woodland that would have edged Irish bogs during the medieval period. One togher yielded a radiocarbon date placing its construction somewhere between AD 1024 and 1162, firmly within the early medieval era, when Irish communities regularly crossed otherwise impassable bogland along routes like these. The bog itself has acted as a preservative, holding the waterlogged timber in a state of near-suspension that would not be possible in drier conditions.