It appears on Ordnance Survey maps as far back as 1838 under the name Rath beg, which simply means "small rath", and the name has stuck through every subsequent survey. What catches the attention is not its size but a small engineering decision buried in its construction: the interior is entirely level, achieved by deliberately building up the southern side to counteract a natural slope in the ground beneath. Someone, at some point in the early medieval period, wanted a flat floor inside their enclosure badly enough to move significant quantities of earth to get one.

A rath is an early medieval ringfort, typically a circular earthen bank enclosing a domestic farmstead, and thousands of them survive across Ireland in varying states of preservation. This one measures roughly 22 metres north to south and just over 23 metres east to west. The enclosing bank varies considerably as you move around the circuit. On the northern side it is at its most substantial, reaching around 5.4 metres in width, while the northeastern and southeastern stretches are noticeably lower and narrower, reduced to about 2.8 metres wide and half a metre in external height. The southern and southwestern sections tell a slightly different story: the bank here is topped with sod-covered stones, and more stones are visible on the outer face, almost certainly the accumulated result of generations of field clearance rather than any original design. The western half of the bank has slumped broadly outward over time, softening what was once a more defined edge. Blackthorn and brambles have colonised the southern half of the circuit, giving that arc of bank a rougher, more tangled character than the grassy northern side. The River Deel, which marks the townland boundary, runs less than 300 metres to the southeast, and a smaller stream passes within 70 metres to the west. And 130 metres to the north-northwest, just visible across the pasture, sits another rath entirely, a reminder that these enclosures were rarely isolated features but part of a worked and inhabited early medieval landscape.