What remains of the stone ringfort at Lisheeneenaun sits on a gentle rise in undulating Galway pastureland, and even the surviving portion is mostly buried under centuries of accumulated rubble and overgrowth. A cashel is a ringfort built from dry-stone walling rather than earthen banks, and in their intact form they could be formidable enclosures. This one, roughly 23.7 metres in diameter, would once have formed a complete stone ring around whatever domestic or agricultural life it sheltered.

When archaeologist McCaffrey examined the site in 1952 and recorded it in his survey, the eastern half of the cashel had already been destroyed, most likely cleared away over generations by farmers working the surrounding land. The western half, though still nominally standing, was so thoroughly obscured by rubble and vegetation that its form was hard to read. Even the detail McCaffrey could record, a visible stretch of external wall-face to the west, had degraded further by the time later inspectors looked again. What they found was a low arc of loose stones smothered in field-clearance material, the kind of slow burial that happens when a structure stops being a building and starts being a convenient place to deposit whatever needs shifting from a nearby field.