Twenty-nine of these structures, known as toghers, a word for a timber trackway laid across boggy or waterlogged ground to allow passage, were identified within Killoran townland during field survey work published in 1999. That so many should cluster in a single townland gives some sense of how heavily this landscape was once threaded with deliberate, engineered movement.

A togher was typically constructed by laying brushwood, roundwood, or a combination of both across the soft ground, sometimes anchored with pegs or stakes driven into the peat below. In Killoran, fifteen of the identified examples used brushwood alone, while the remainder combined brushwood with roundwood timbers. Three showed clear evidence of pegs or stakes, suggesting more substantial or longer-lasting construction. Where wood species could be determined across thirteen of the toghers, the picture that emerged was of a managed or at least carefully selected woodland resource: ash and hazel dominated, but alder, birch, elm, holly, and mountain ash also appeared. Radiocarbon dating of one togher returned a date range of AD 1024 to 1162, placing at least part of this network firmly in the early medieval period, a time when Irish bogs were not empty wilderness but working landscapes crossed regularly by people, livestock, and goods.