The one sitting in level pasture at Lotteragh Lower has three. Three concentric earthen banks, each separated by its own fosse (a ditch dug to heighten the defensive effect of the bank behind it), arranged around an interior roughly thirty metres across. The outer bank has been partially swallowed by a later field boundary, but the inner and middle banks still form complete circuits, and the ditches between them can be traced all the way round. The inner bank, seen from outside, rises to about 3.6 metres, which is a considerable wall of earth by any measure. Whatever this place was built for, it was not an ordinary farmstead.

The site carries a local name that points toward something grander: Lissoleem, or Lios Oluim in Irish, meaning the fort of Olom. According to tradition recorded by Seoighe in 2000, this connects the site to Mogh Nuadat, known as Ailill Olom, a mythical second-century king of Munster. The historical Olom, if he existed at all, belongs to a layer of early Irish tradition where kingship, mythology, and landscape are tightly wound together, and many prominent sites across Munster carry associations with his name. What gives the claim at least some plausibility here is the sheer scale of the defences. Multivallate ringforts, those with two or more enclosing banks, are generally interpreted by archaeologists as higher-status sites, and a triple-banked example is rare enough to suggest a place of real importance within the early medieval landscape, whatever the truth of the Olom connection.

The fort sits in working farmland, and the interior is under rough pasture with patches of dense overgrowth; the enclosing banks themselves are covered in trees and bushes, which makes the circuit easier to follow visually but harder to read as earthwork. A gap about 1.4 metres wide in the northern banks is used by cattle moving in and out of the interior, which means the approach from that side is well-worn but also somewhat churned. The archaeology record was compiled by Denis Power, and an aerial photograph taken in April 2002 gives a clearer sense of the overall geometry than any ground-level view can manage. On the ground, the scale of the inner bank, seen from within the fosse, is the detail that stays with you.