The example at Coolmore in County Cork is a small but well-preserved specimen of this kind, sitting to the north-west of Coolmore House and largely consumed by vegetation. It is circular in plan, with walls a full metre thick, an internal diameter of two metres, and a height of 2.8 metres, topped by a pointed roof. Two pointed door openings face east and west, and the interior walls are studded with small holes, each around two centimetres wide, which may once have held hooks for suspending goods inside the cool chamber.

Icehouses were a standard feature of substantial Irish estates from at least the eighteenth century, serving the kitchens and dining rooms of the houses they served. The thick walls and the insulating mass of the natural rock on which this one is built would have helped maintain low temperatures across the seasons. The pointed roof form is not uncommon in Irish examples, and the opposing door openings suggest a degree of deliberate design, possibly to allow controlled ventilation or simply to ease the movement of ice blocks during loading. The small hook-holes in the interior are a detail that invites speculation about how the space was used beyond straightforward cold storage, though their precise function is not definitively recorded.