What makes the site particularly strange is not just its disappearance but the paper trail it left behind, a sequence of sources that contradict one another and leave the monument suspended somewhere between memory and myth.

The most vivid piece of evidence is a drawing made in 1777 by Gabriel Beranger, an artist and antiquarian who toured Ireland documenting monuments that were already, even then, under threat. His sketch of what was locally called the "rocking stone" at Bullock shows something more structured than a single balanced stone: the side wall of a passage, built from large orthostats, which are the substantial upright slabs used in megalithic construction, rising in height toward a point where a capstone rests across them. The form he recorded is consistent with a megalithic tomb, possibly a passage tomb or a related type, though the record is not precise enough to say with certainty. The 1843 Ordnance Survey edition marks the site as "Druids Altar", a label commonly applied in the nineteenth century to any ancient stone structure, and its appearance on that map suggests the monument was still standing, or at least still recognisable, at that date. Yet Francis Elrington Ball, writing in 1902, stated that the structure had been removed in the early nineteenth century, which would place its destruction somewhere in the decades before that 1843 survey. Whether both accounts can be reconciled, or whether one is simply mistaken, is not clear from the surviving record.

There is, in practical terms, nothing to see at Bullock today. No visible surface trace of the structure has been recorded, and the site has not been excavated in any documented way. The value of visiting the area lies less in what remains and more in the exercise of reading landscape against archive: Beranger's drawing, Ball's account, and the Ordnance Survey map together sketch the outline of something that was already slipping away when anyone thought to write it down. Bullock itself is a small harbour settlement near Dalkey, accessible by road from the town, and the surrounding area rewards a careful look at how thoroughly a substantial stone monument can be absorbed into an urban landscape over the course of two centuries.