It is a togher, a type of wooden trackway laid across boggy or marshy ground to allow passage where ordinary footing would be impossible. These structures range considerably in their construction, from rough bundles of brushwood to carefully laid planks and rails, and they are classified accordingly. The Annaghbeg example is a class 3 togher, a designation that reflects a particular method of construction within that broader tradition of Irish bog roads.

The togher was recorded during a field survey carried out in 1988, when it was noted to run on an east to west orientation. It was documented by the Irish Archaeological Wetland Unit at University College Dublin, part of a broader effort during the late twentieth century to systematically record the archaeological features emerging from, or still concealed within, Ireland's disappearing bogs. The reference to Raftery 1990 places this find within Barry Raftery's influential work on Irish bog roads, which drew together evidence from across the country for these remarkably preserved prehistoric and early medieval routes. Peat's anaerobic conditions, its near absence of oxygen, are what allow organic materials like timber to survive for centuries or even millennia, which is precisely why tоghers that would have rotted away long ago on dry land can still be found intact beneath the surface.