That designation implies a gun emplacement, a platform built to position artillery covering a stretch of water or coastline, yet today the structure is quietly unremarkable to anyone passing without knowing what they are looking at.

The battery takes the form of a stone-faced platform, roughly four metres high and nearly twenty metres long on its northeast to southwest axis, with a width of just over eight metres. The facing stones give it a deliberate, constructed appearance, but the northwest elevation has partially collapsed, revealing the earthen and rubble core beneath, which is the typical interior of such a raised defensive work. On top of the platform, a low stone wall, only about half a metre in height, encloses the raised area, likely the remnant of a parapet or retaining edge where cannon would once have been positioned. A coastal battery of this kind was not a fort in the enclosed sense but a prepared firing position, usually oriented to command a harbour mouth, creek, or navigable channel. The salt marsh to the south, which the platform overlooks, suggests the battery was laid out to control waterborne movement through that low, tidal ground. When it was built, and by whom, is not recorded, though its presence on the 1842 map as an already-old feature points to origins well before the nineteenth century, possibly during one of the periods of coastal anxiety that punctuated Irish history from the late sixteenth century onward.