Built from the same heavily mortared, randomly coursed limestone blocks as the castle it protects, the structure features stout walls up to 2.3 metres thick with a distinctive base batter. Whilst the southern and western sections remain reasonably intact, much of the remaining walls have suffered from stone robbing and demolition over the centuries. A substantial pile of rubble at the southwest corner likely marks where an angle tower once stood, according to historical records from 1906.

The main entrance to the bawn sits in the western wall, though it’s now largely ruined. Originally, this gateway featured an arched entrance measuring 2.7 metres wide, flanked by two massive D-shaped towers that rose at least two storeys high. These towers, measuring 11.8 metres east to west and 5.7 metres north to south, had walls 2 metres thick and were equipped with gun loops set in deep embrasures; strategic openings that allowed defenders to cover the approaches along the bawn walls to both north and south. Just northeast of the castle, an opening in the external wall face topped with three sets of corbels may have served as either a latrine or a sallyport for quick exits during sieges.

The bawn’s internal layout reveals intriguing evidence of earlier defensive arrangements. The south wall kinks southward at its midpoint, and this peculiarity is mirrored internally by a drystone wall running from the gateway’s south tower to the castle’s northwest corner, suggesting it was built along the line of an earlier defensive wall that may have enclosed an inner ward. Additional traces of internal walling, running roughly northeast to southwest, can be seen in the northwestern section of the bawn, hinting at a complex evolution of this fortified space over time.