Scattered across the site are infilled mineshafts, and among the trees stands a ruined rectangular structure, roughly five metres east to west and just under five metres north to south, with a wide entrance opening at its eastern end. The walls are overgrown and the shafts long since closed over, but the outline of a working operation is still legible in the landscape.

Copper mining in Ireland reached a particular intensity during the eighteenth and early nineteenth centuries, driven by demand from British industry and improvements in smelting technology. This site fits that pattern, with the surviving structure dated by scholar William O'Brien to somewhere in the second half of the eighteenth century or the early nineteenth century. The building likely served a functional role connected to the extraction or initial processing of ore from the shafts nearby. A second copper mine lies roughly two hundred metres to the east, suggesting that this stretch of the lakeshore was worked as part of a broader effort to exploit the local geology rather than as a single isolated venture. That two such sites sit within a short distance of each other, largely unknown within a landscape now given over entirely to tourism and conservation, says something about how thoroughly one era can overwrite another.