It was not a grand thoroughfare but a pragmatic solution to a familiar Irish problem: waterlogged ground that swallowed feet and cart wheels alike. A togher is a timber trackway built across boggy or marshy terrain, typically constructed from whatever wood was to hand, and this particular example at Corlea was recorded in 1989 as a narrow, carefully laid structure, 1.2 metres wide and between 10 and 15 centimetres deep, its minimum surviving length reaching 1.9 metres.

The construction method was straightforward but deliberate. Lengths of roundwood and brushwood were laid closely together in a longitudinal arrangement, running on an east-northeast to west-southwest orientation, and wooden pegs were driven into the ground at irregular intervals along both sides to hold the whole thing in place. Radiocarbon dating subsequently placed its construction somewhere between 3368 and 3097 BC, making it a Neolithic structure, built by farming communities who had been living in Ireland for perhaps a thousand years by that point. Corlea is already well known as the site of a remarkable Iron Age trackway dated to 148 BC, but the bog has been preserving timber roads for far longer than that single famous example suggests. This earlier togher, classified as a class 3 structure based on its construction type, is a quieter piece of the same extraordinary archive of wooden engineering that the Corlea landscape holds beneath its surface.