A field survey identified 44 toghers, or bog roads, within Cooleeny townland alone. A togher is essentially a trackway laid across wet or boggy ground using timber, allowing people and animals to cross terrain that would otherwise be impassable. Finding one is unusual; finding 44 in a single townland is something else entirely.

The variety in their construction is part of what makes these toghers so interesting. Most were built using a combination of brushwood, the thin branchy material cut from shrubs and small trees, and roundwood, which refers to small whole stems or poles. Six relied on roundwood alone, eight on brushwood alone, and one used brushwood combined with gravel, a notably different approach. Wood species were identified in seventeen of the toghers, and the range of timber used tells its own story about the local landscape: alder, ash, birch, blackthorn, hazel, mountain ash, and willow all appear, suggesting builders were working with whatever the surrounding woodland and scrub could provide rather than selecting a single preferred material. Two of the toghers were directly dated, both falling within the Iron Age. The calibrated date ranges, 388 to 207 BC and 372 to 192 BC respectively, place their construction somewhere in the last few centuries before the turn of the millennium, during a period when bog roads of this kind were being laid across Irish wetlands with some regularity. Whether the other toghers at Cooleeny belong to the same period, or represent activity spread across a much longer span of time, remains an open question.