What remains today is a substantial wall, measuring seven metres north to south and rising to approximately 4.5 metres in height. This imposing structure, with its distinctive base batter on the eastern side, once formed part of Rosclogher Castle, a tower house that would have commanded views across the lough and surrounding countryside.

The wall features a single lintelled embrasure, positioned towards the northern end at ground level on the western face. This narrow opening, measuring 0.82 metres wide and 0.7 metres high, would have served as a defensive light or window, allowing defenders to observe and potentially fire upon approaching threats whilst remaining protected behind the castle's thick walls. Though the quoins; the dressed corner stones that would have reinforced the structure's edges; have long since disappeared, the wall's construction speaks to the skill of medieval Irish masons.

What makes this site particularly fascinating is how it demonstrates the practical reuse of medieval structures in later centuries. After the castle fell into disuse, this eastern wall was repurposed as the western wall of a church, catalogued as LE002-015001. The lack of bonding between this ancient wall and the church's northern and southern walls clearly shows this was an economical solution by later builders who recognised the value of incorporating the sturdy medieval masonry into their new religious building. This layering of history, where defensive architecture transformed into ecclesiastical use, reflects the broader changes in Irish society as the need for fortified residences gave way to more peaceful times.