It is easy to overlook, and for a time it was officially mistaken for something else entirely: as recently as 1996, the Record of Monuments and Places listed it as a cist, which is a stone-lined burial box, typically used in prehistoric interments. That designation actually belongs to a different site roughly 300 metres to the south-east. The hut at Tullycommon had, in effect, been misplaced on paper while sitting quietly on its ridge, commanding wide views from west to east.

The structure itself is modest in scale. Its interior measures approximately three metres north to south and 2.7 metres east to west, making it a tight but workable living space. It is defined by a scarped earthen bank, meaning the ground has been cut away and built up to form a low enclosing wall, which survives to an external height of between 0.4 and 1.7 metres depending on where you measure. What gives the site its broader interest is its context. It sits within an extensive multiperiod field system, a landscape that was divided, farmed, and reorganised across several different eras, the boundaries of each period layered over or beside those of its predecessors. About 84 metres to the south-south-east there is also a separate enclosure, suggesting that this corner of Tullycommon was once a more structured and inhabited place than its current state of rough pasture implies.