Known in Irish archaeology as a togher, this type of structure is a trackway laid across wet or boggy terrain, typically built from timber planks, poles, or brushwood pressed into the soft ground to create a passable surface. What makes toglhers so remarkable is not simply their age but their survival: peat bog is one of the few environments that preserves organic material across centuries or even millennia, effectively freezing these structures in place long after the communities that built them have vanished.

This particular togher at Corragarrow is classified as a class 3 example. In the typology developed for Irish bog roads, class 3 toglhers represent a specific construction method, generally involving a more substantial or structured approach to the timber laid across the bog surface, though the precise character of this one remains incompletely documented. It was noted during a field survey carried out in 1989, at which point its east to west orientation was recorded, a detail attributed to the archaeologist B. Raftery. That alignment may well reflect the practical logic of the landscape, connecting firmer ground on one side of a wetland to another, though without further excavation the full extent and date of the trackway remain unknown.