This rectangular bawn, measuring approximately 26.5 metres east to west and 14.6 metres north to south, was built from substantial limestone blocks held together with mortar. The stones show little sign of formal dressing, suggesting a more functional than decorative approach to its construction. Historical maps tell the story of its decline; the 1840 Ordnance Survey six-inch map marks it simply as ‘Cashlaunawogga’, whilst by the 1897 edition it had already earned the sobering addition ‘in Ruins’.

The fortified enclosure contains several structures that speak to its former importance as a defensive settlement. In the northeast corner stand the deteriorating remains of a tower house, constructed from the same limestone blocks as the surrounding bawn walls. Recent satellite imagery from Digital Globe and Google Earth has revealed the foundations of another building, roughly eight metres square, positioned in the centre of the bawn. These remnants offer tantalising glimpses of how this fortified homestead would have functioned during its heyday, with the tower house providing both defence and accommodation whilst the central building likely served domestic or agricultural purposes.

Built into the south-facing slope beneath the bawn’s southern wall, a limekiln represents the site’s later agricultural use. This addition suggests that even after its defensive role had ended, Cashlaunawogga continued to serve the local community as a source of lime for improving acidic soils or for construction mortar. The combination of medieval fortification and post-medieval industry makes this site a particularly interesting example of how Irish strongholds evolved and adapted through the centuries, even as they fell into ruin.