The dimensions are modest enough that the whole thing could be mistaken for a natural irregularity in the field, a slight thickening of the ground that only resolves into something deliberate once you know what you are looking at.

The structure is a sub-rectangular hut site, the earthwork footprint of an early medieval dwelling, preserved beneath turf within the enclosure of the ringfort. Ringforts, circular earthen or stone enclosures typically dating from the early medieval period, were the most common form of rural settlement in Ireland between roughly the fifth and twelfth centuries, and it was not unusual for a hut or small building to occupy the interior. What makes Froghanstown quietly notable is the density of the surrounding landscape: another ringfort lies roughly 240 metres to the north-east, and a third sits around 375 metres to the west-south-west. Three of these enclosures within such a compact area of Westmeath countryside suggests a stretch of land that was once considerably more populous and organised than its present pastoral silence implies.