The earthwork at Kildromin appears on one set of aerial images and vanishes entirely from another taken just a few years later, a behaviour that says as much about the soggy, drained pasture it sits in as about the monument itself. What survives at ground level is a penannular earthwork, roughly 46 metres across on its longer axis, defined by a low scarp that runs from the south-southwest around through west and north to the east. Penannular simply means almost circular, with a deliberate gap, and here that opening faces south, giving the whole form the shape of a large horseshoe pressed into the landscape.

The monument was not picked up by the Ordnance Survey's historic mapping at all, which suggests it had already lost much of its physical presence above ground by the time those surveys were made. It came to light through the Bruff aerial photographic survey of 1986, recorded as reference Bruff 160.02, when the distinctive penannular cropmark became legible from the air. Cropmarks form when buried or shallow earthworks affect how vegetation grows above them, with ditches tending to produce lusher, greener growth and banks the opposite, making the underlying archaeology briefly readable to an aircraft or camera at the right moment. A ditch-barrow, a circular burial monument defined by a surrounding ditch rather than a raised mound, lies just ten metres to the northeast, catalogued separately as LI032-244. The proximity of these two monuments hints at an area that once held some significance, though the low-lying ground, now cut through by land drains and watercourses, has done a thorough job of obscuring whatever that significance was.

Accessing this site in any meaningful sense is complicated by its setting. The earthwork sits on wet, low-lying pasture approximately 525 metres southwest of the townland boundary with Milltown, and the land drains that cross the area are a persistent obstacle on the ground. The monument's intermittent visibility is itself worth understanding: it showed up clearly on Ordnance Survey of Ireland orthoimagery captured between 2005 and 2012, but was absent from a Digital Globe image taken between 2011 and 2013 and again invisible on Google Earth imagery from September 2020. Soil moisture, crop type, and seasonal conditions all affect whether such features register from above. For anyone curious enough to seek it out, the best chance of seeing any surface trace lies in dry spells when the scarp definition is highest, and even then, patience with soft ground is essential.