The site is a bivallate rath, meaning a ringfort defended by two concentric earthen banks rather than the single bank more commonly seen across Ireland, and its interior is crowded with the foundations of multiple structures in various states of collapse and overgrowth. What makes the place quietly unusual is not any single dramatic feature but rather the density of what lies within, and how much of it remains genuinely uncertain.

Three conjoined rectangular buildings appear to run north to south across the centre of the interior, but the walls are so ruined and so heavily overgrown that their precise outlines and dimensions cannot be confirmed with confidence. The broader interior holds further confused foundations beyond these three structures, suggesting a site that was once considerably more complex than what survives. The name Dún Na Manach carries a meaning worth noting: in Irish, manach means monk or monks, and dún denotes a fort or fortified place, which raises the possibility of an ecclesiastical connection at some point in the site's history, though the structural remains themselves are ambiguous. The site was catalogued by J. Cuppage in the 1986 Dingle Peninsula archaeological survey, a substantial regional study of the Corca Dhuibhne area, and that description remains the principal published account of what survives here.