This fragment, measuring just over 10 metres long and 2 metres high, extends northward from the northwestern corner of the associated tower house. The wall’s thickness of 0.75 metres reflects the substantial construction typical of these fortified enclosures, which served as protective courtyards around tower houses throughout Ireland.

Bawns were essential defensive features of the Irish landscape from the 15th to 17th centuries, providing a fortified space where livestock could be secured and inhabitants could retreat during raids. The Newcastle example represents one of many such structures scattered across the countryside, though most survive only as fragments like this one. The wall would originally have formed part of a larger rectangular or square enclosure, complete with corner towers and a defended gateway, creating a formidable barrier against potential attackers.

Archaeological investigation of the site in 2007 yielded little in the way of artefacts; testing conducted immediately north of the wall fragment produced no archaeological material. This absence of finds isn’t unusual for bawn sites, as these were primarily functional military structures rather than areas of sustained domestic activity. The main living quarters and daily activities would have been concentrated within the tower house itself, leaving the bawn courtyard relatively clear of the debris that typically interests archaeologists.