This is a togher, the Irish term for a bog road or trackway, and what survives here is a class 3 example, meaning it was a relatively substantial construction rather than a simple scatter of planks laid in haste.

The Cloonbreany togher runs east to west and measures 1.65 metres wide and around 0.2 metres deep, modest dimensions that nonetheless represent a considered piece of engineering. Archaeologists identified clear evidence of both a superstructure, the surface layer on which people or animals would have walked, and a substructure beneath it providing a stable foundation across the unstable bog. The builders used roundwood and brushwood, and among the species identified were birch and alder. Neither is accidental: alder in particular is well known for its durability in wet conditions, and it was a common choice for timber structures built to sit in or near water. Birch, lighter and more flexible, would have contributed to the brushwork layers. Together they created a surface that was functional, locally sourced, and suited to an environment that preserved it far longer than anyone who laid it down could have anticipated.