Beyond that bare fact, the details are elusive. No published description of the inscription has been made widely available, which places it in a curious category of monument, known to exist, recorded as significant, but not yet fully brought into the light.

Askillaun sits in Clew Bay, a bay famously scattered with drumlins, the rounded glacial hills that here have been partially drowned by the sea to produce its distinctive archipelago of low, humped islands. Inscribed stones in the west of Ireland range considerably in age and purpose. Some carry ogham, an early medieval script that encodes names, usually in a commemorative or territorial context. Others bear simple incised crosses, suggesting early Christian use. A few are far older, decorated with abstract motifs whose meaning has not survived their makers. Without closer documentation, this particular stone resists easy classification, and that ambiguity is itself part of what makes it worth noting.