It exists, as far as the record is concerned, only as a shape seen from the air, a cropmark pressed into the pasture by whatever lies beneath the soil. That alone makes it a peculiar kind of place: large enough to be significant, old enough to have been forgotten entirely by the cartographic tradition, and visible only under the right conditions.

Cropmarks form when buried walls, ditches, or pits affect how grass or grain grows above them, producing patterns detectable from aircraft or satellite. At Skool Hill, aerial photographs taken during the Bruff Survey, recorded under reference Bruff 9003: AP4/3697, first identified the monument as a large oval-shaped cropmark. Later, Digital Globe orthophotos taken between 2011 and 2013 revealed something more complex: a substantial rectangular cropmark measuring roughly 72 metres east to west and 47 metres north to south, with a second rectangular enclosure, measuring approximately 66 metres north to south and 47 metres east to west, adjoining it to the east. The two shapes together suggest a double enclosure of some kind, though without excavation, its date and purpose remain unknown. By October 2015, Google Earth imagery of the same area showed nothing at all. The monument had, in effect, disappeared again. The site was compiled by Alison McQueen and Vera Rahilly and uploaded to the record in August 2020.

The hill sits close to the townland boundary with Loughanstown, roughly 130 metres to the north, and the slope opens out with good views to the west, north, and east, though sight lines are restricted in other directions. As working pasture, there is no public access to the field itself, and with nothing visible on the ground, a visit would offer little to the naked eye. The monument's interest lies precisely in its elusiveness; it surfaces in the archaeological record as a pattern of growth and dryness, present one season and gone the next, its outline legible only to whoever happens to be looking from above at the right moment.