What remains today is a roughly circular plateau, its original form still discernible despite centuries of weathering and agricultural activity. The most visible remnants of this prehistoric settlement are a few edge stones that still stand on the southern side, emerging from the wet, grass-covered ground that characterises this part of the Irish landscape. A modern field fence now cuts across the northern section, a reminder of how contemporary farming continues to shape these historical sites.

This ringfort, or rath as it's known in Irish, once served as a fortified farmstead typical of early medieval Ireland, roughly dating from 500 to 1170 AD. These circular enclosures were the homes of prosperous farmers and their families, designed with defensive earthen banks or stone walls that protected both people and livestock. The name 'Cashlanaveeve' itself likely derives from the Irish 'caiseal', meaning stone fort, combined with local place name elements that have evolved over generations of oral tradition.

The site forms part of the townland of Balleeghan Lower, one of many such archaeological features documented in Donegal's rich archaeological landscape. Though modest in its current state, this rath represents the thousands of similar settlements that once dotted the Irish countryside, each one a centre of agricultural life, local governance, and family tradition. The Archaeological Survey of County Donegal, compiled in 1983, catalogued this and numerous other sites, helping preserve knowledge of these places even as their physical presence continues to fade into the landscape.