Flags of stone, arranged end to end, stretching for what early observers estimated to be about a mile in an easterly direction. The patches were not continuous, but they were consistent enough that a pattern was unmistakable. And then, in the way of such things, the bog grew back over the record, coniferous plantation moved in, and the road effectively disappeared again.

The causeway at Cool West came to light, or at least to scholarly notice, in connection with something else entirely. In 1932, L. S. Gogan published an account of the Cnoc na bPoll hoard, a find of early metalwork recovered from the same general area, and noted almost in passing that roughly 400 yards from the hoard's find-site there was evidence of early habitation. What he described was an ancient stone causey, a term for a flagged or paved trackway of the kind sometimes laid across boggy ground to allow passage where the earth would otherwise swallow a traveller. Alongside the flags, Gogan recorded the remains of a stake paling, a boundary or barrier formed from driven wooden stakes, which adjoined the road surface. A map included in his publication marked the approximate extent of the feature. The association between the road, the paling, and the nearby hoard suggests at minimum that this corner of Limerick was once actively used, organised, and travelled, though precisely when and by whom the record does not say.

The site as Gogan described it no longer presents itself to visitors in any legible form. The area indicated on his map is now covered by dense coniferous plantation, and deep drainage channels cut for forestry have intersected the ground in a way that makes surface survey unreliable. A record compiled for the Archaeological Survey of Ireland and uploaded in August 2011 notes that no trace of any archaeological features was found during inspection of the area. What remains is essentially a cartographic ghost: a road marked on a 1932 map, buried under a plantation, its flags presumably still there somewhere beneath the drains and the root systems, waiting on different circumstances.