Yet this solitary post, standing roughly twenty metres below the high water mark on the eastern shore of Horse Island in the Fergus Estuary, has been noted, measured, and quietly puzzled over by researchers working along the Clare coastline.

The stake sits about 150 metres south of the island's pier, alone in the mud with no companion posts nearby. Researchers O'Sullivan and colleagues, writing in 2010, floated the possibility that it may once have been used for tying nets to, a mundane but entirely plausible function in an estuary that would have supported generations of inshore fishing. Fixed net stakes of this kind were a common feature of tidal fisheries around Ireland, where a post or series of posts could anchor bag nets or seine nets against the pull of the tide. What makes this one quietly interesting is precisely its isolation. A single stake implies either that the wider structure it belonged to has long since rotted away or been removed, or that it always served some small, localised purpose on its own. The mudflats have preserved it, but offer no further explanation.