At Courhoor in County Galway, the slow removal of bog has revealed a stretch of ancient walling that runs for 53 metres across gently sloping ground, oriented on a roughly northwest to southeast axis. It is an irregular thing, built not to any tidy specification but from whatever the landscape offered, large boulders laid alongside natural rock outcrops and glacial erratics, the latter being boulders deposited far from their origin by retreating ice sheets thousands of years before anyone thought to build a wall around them.

What makes this field boundary quietly compelling is precisely that irregularity. Whoever built it was working with the land rather than against it, incorporating outcrops and erratic stones into the fabric of the wall rather than clearing them away. The structure itself does not announce a date or an owner. It was recorded in Paul Gosling's Archaeological Inventory of County Galway, Vol. I, West Galway, published by the Stationery Office in Dublin in 1993, which places it within a broader effort to document the dense and often overlooked fabric of prehistoric and early historic field systems across the west. Such boundaries, when buried beneath bog, can be remarkably well preserved, and their exposure through turf-cutting sometimes offers the only opportunity to observe them at all before the elements resume their work.