Somewhere beneath the tarmac of the M7 motorway near Kill, County Kildare, lies what was once a small enclosed settlement, glimpsed briefly by archaeologists before road-building covered it again. The site is an odd kind of place to write about, precisely because it no longer exists in any accessible sense. Its interest lies in that fleeting window of investigation, and in what the ground gave up before the machinery moved in.

In 2003, ahead of construction of the M7 Heath-Mayfield Motorway, archaeological excavations were carried out after the site had first been flagged during routine centre-line testing of the proposed route. What emerged was the outline of a post-medieval enclosed settlement, a type of discrete farmstead or small habitation unit defined by boundary features rather than the more familiar fortified forms of earlier periods. The structures and boundaries uncovered were thought to date to the 1700s, placing them in the era of improving landlordism and rural reorganisation that reshaped much of the Irish countryside in the eighteenth century. Among the finds were slag, pointing to some kind of metalworking or industrial activity on the site, along with seventeenth-century and early modern ceramics. The pottery in particular hints at a habitation history stretching back somewhat earlier than the structural remains alone might suggest, perhaps an earlier phase of occupation that left fewer physical traces.