An iron cross, reduced now to a rusting stump, marks what was once the focal point of an outdoor place of worship. The mass rock itself, however, is gone.

Mass rocks are boulders or flat stones at which Catholic priests celebrated Mass in secret during the Penal Law era, when Catholic worship was suppressed under eighteenth-century legislation and clergy operated at considerable personal risk. The site at Knocks follows a familiar pattern, positioned on sloping ground with a natural southerly aspect that would have offered worshippers some shelter and a clear view of approaching strangers. What makes this particular spot unusual is what happened to it much later. In the 1960s, the landowner and a local priest chose to mark and protect the site by constructing a small concrete enclosure around the rock, creating a modest commemorative bay. The gesture was well-intentioned, but the mass rock itself is no longer present within it. What remains is essentially a memorial to a memorial, a concrete frame built to honour something that has since disappeared from inside it.