This one is modest even by the standards of such things, just thirty centimetres wide and nine centimetres deep, running on a northeast to southwest orientation through what was once saturated wetland.

Toghers were essentially ancient causeways, constructed by laying timber across boggy or waterlogged terrain to create a passable surface. They range from rough bundles of brushwood to carefully engineered planked roads, and are classified accordingly. This example falls into class 3, meaning it is composed of longitudinal roundwood rather than transverse planking or more complex joinery. The timber used is ash, worked to a maximum diameter of around nine centimetres, and arranged lengthwise along the line of travel. Ash was a practical and widely available choice in early Irish woodland management, strong enough to bear weight and relatively resistant to decay in anaerobic, waterlogged conditions, which is precisely why such structures survive at all. The bog, in effect, does the preserving.