Recorded as a hut site in the Record of Monuments and Places as recently as 1996, it was only on closer inspection in 1997 that it revealed its actual character: not a hut, but a walled enclosure, its purpose still not entirely clear.

The structure measures roughly 15.5 metres north to south and 12.7 metres east to west internally, defined by a wall that survives to a maximum height of one metre. What makes the construction worth a second look is the arrangement of the stonework. The wall is built from slabs laid with their long axis pointing inward, towards the centre of the enclosure, a technique that suggests deliberate intent rather than casual field clearance. The site sits at the lower end of a limestone pavement that slopes southward, a landscape feature characteristic of the Burren, where bare karst rock, fractured into flat expanses, dominates the terrain. The enclosure was noted on an annotated map as early as 1994, passed on by a local contact, T. Coffey, before any formal ground inspection had taken place.

The gap between what a site is called on a map and what it turns out to be on the ground is a recurring theme in Irish field archaeology, and Ballyganner is a modest but telling example. The reclassification from hut site to enclosure might seem like a bureaucratic footnote, but it reflects how much still depends on someone actually walking out to look.