St Comgall's Church in Shankill, on the southern fringe of County Dublin, has left no surface remains whatsoever, and the ground where it once stood offers no obvious sign that anything was ever there at all. What survives is not stone or mortar but a single bibliographic reference, pointing to a building that has otherwise been entirely absorbed by the landscape.

The most specific account of the church's position comes from F. E. Ball's 1906 historical survey of County Dublin, which places it on the left-hand side of the gateway leading to Shankill Castle. That detail is precise enough to feel reliable, yet in practice the site's exact location remains uncertain. The dedication to St Comgall connects the church to an early Irish monastic tradition; Comgall was a sixth-century abbot associated primarily with Bangor in County Down, and dedications to him are relatively rare in Leinster, which makes the Shankill example a minor curiosity in itself. The church sits at the foot of the Dublin Mountains, a landscape where early ecclesiastical foundations are not uncommon, often marking the outer edges of fertile lowland territory.

Visitors to the area will find little to observe directly. The absence of visible remains means there is no ruin to examine, no carved stonework to photograph, and no marked boundary to walk around. The interest here is almost entirely archaeological and historical rather than visual. Those drawn to the site would do best to approach it with Ball's description in mind and an awareness that the ground itself may hold subsurface features even where none are visible above. The broader Shankill area, at the transition between the coastal plain and the rising ground of the mountains, rewards careful attention to the landscape even when the specific monument has vanished from view.