It is a togher, the Irish term for a trackway laid across wet or marshy ground, and this particular example is a quietly precise piece of ancient engineering: 1.25 metres wide, just 8 centimetres deep, and running east to west across ground that would otherwise have been impassable.

The construction method is straightforward but deliberate. A single layer of ash roundwood, each piece averaging about 7 centimetres in diameter, was laid longitudinally, meaning the timbers run along the direction of travel rather than across it. Ash was a practical choice, strong and flexible, and the roundwood form suggests these were relatively slender branches or small trunks rather than split or worked planks. Toghers range considerably in ambition, from rough bundles of brushwood thrown down in a hurry to elaborate multi-layered platforms of hewn timber. This class 3 example sits in the middle range, functional and considered, built for regular use across difficult terrain rather than as a casual crossing.