In the townland of Dromkeen in north Kerry, a ringfort once stood that is now known solely through its appearance on a nineteenth-century map, its physical presence having vanished entirely between one survey and the next.

A rath, as ringforts of this type are commonly known, was a roughly circular enclosure defined by earthen banks and ditches, typically used as a farmstead during the early medieval period in Ireland. Thousands survive across the country in varying states of preservation, but this particular example in Dromkeen is recorded on the Ordnance Survey map of 1841 to 1842 and then simply disappears. By the time the 1916 edition of the OS map was produced, it was no longer marked, and no visible trace of it survives on the ground today. Whether it was levelled for agriculture, eroded gradually over decades, or absorbed into the surrounding landscape through some combination of both, the record does not say. What remains is the gap itself, a circular enclosure that was present enough to be mapped by nineteenth-century surveyors and gone within a few generations.

The site was documented by C. Toal in the North Kerry Archaeological Survey, published in 1995, where it appears as entry number 561. Its location is given in relation to a neighbouring site to its southwest, which at least fixes it loosely within the wider landscape of north Kerry, a region with a notable density of early medieval remains. The Dromkeen rath is, in a sense, more useful as an absence than as a monument, a reminder that the archaeological record of any landscape is not a stable inventory but something that thins and breaks apart across time.