Locally known as the wartstone, this unassuming lump of rock measures roughly 40 centimetres long, 23 centimetres wide, and just 12 centimetres deep, yet its upper surface carries two distinct features that have clearly attracted human attention across very different eras and for very different reasons.

Cut into the southern end of the upper surface is a rectangular mortice, the kind of socket that would once have held a small upright cross or marker post. Elsewhere on the same surface, someone has inscribed a cross with expanded terminals, meaning the arms of the cross flare outward at their ends, a style associated with early medieval stonework in Ireland. Beside it, the letters IL are carved into the stone, though their meaning remains unexplained in the available record. The stone was noted by Turner in 1983 and had previously been documented by O h Ealidhe and Prendergast in 1977, suggesting it has attracted the curiosity of researchers for decades, even if it has never attracted much wider attention. The local name, the wartstone, points to a parallel tradition of folk healing, in which particular stones were credited with the ability to cure warts, usually through rubbing or the leaving of a small offering.

Kilmashogue lies in the Dublin Mountains to the south of the city, and the area is well served by trails and forestry roads, making it accessible on foot without great difficulty. The stone sits at the roadside rather than deep in the landscape, so locating it is less a question of navigation than of patience and attention. It is easy to walk past something this small without registering it as anything more than a stray piece of rock. What repays a closer look is the way the two traditions seem to have converged on a single surface, the formal Christian imagery of the inscribed cross and the mortice socket sitting alongside centuries of vernacular belief that the stone itself held some quiet, practical power.