Tucked behind the old school building from 1901, this enigmatic feature consists of upright stone slabs, each roughly 0.75 metres high, arranged to form two sides of a square measuring approximately 4 metres across. A natural rock outcrop forms the third wall, whilst the fourth side remains open, creating an enclosure that has puzzled visitors for generations.

Within this stone chamber, two flat slabs were traditionally positioned horizontally against the western wall. These stones, known locally as the Mass Rock, served as a clandestine altar during Ireland’s Penal Laws, when Catholic worship was forbidden and priests risked their lives to celebrate Mass in secret outdoor locations. Local tradition holds that one of these stones bore an inscribed cross on its surface, marking its sacred purpose. Nearby, another flat stone featured a depression resembling a bullaun; a hollowed stone typically associated with early Christian sites in Ireland, though this particular feature is no longer visible.

Unfortunately, this significant piece of Irish religious heritage has recently vanished from its centuries-old location. The Mass Rock has been removed from the site, and its current whereabouts remain unknown, leaving only the stone enclosure and the memories of local residents who recall its presence. The loss of this artefact represents not just the disappearance of a physical object, but the severing of a tangible link to a time when faith and defiance intertwined on this remote Atlantic outpost.