This is a disused pier, roughly thirty-two metres long and nine metres wide, built with an outer facing of large water-rolled stones packed around a rubble core of smaller stones and gravel. It rises only about eighty centimetres above the lakebed, which gives it an almost submerged quality, somewhere between a proper landing stage and a causeway that has thought better of itself. Much of it has partially collapsed, and the lake has been quietly reclaiming it.

The construction method is straightforward but tells you something about the practicalities of lakeshore building. Water-rolled stones, smoothed by the action of the lake itself, were selected for the outer faces, providing a relatively stable and interlocking surface, while the interior was packed with whatever smaller material was to hand. Piers of this kind on inland lakes served rowing boats and small cargo craft, often connected to estate activity, fishing, or the movement of turf and timber across water rather than overland. Muckross, as part of the Killarney estate landscape, was a busy working environment long before it became a national park, and small lakeside structures like this one were unremarkable features of that economy.