What sets this one apart is the quietly telling assortment of objects that once lay inside it, things that suggest the cave was not merely a curiosity of geology but a place where people lived, worked, or sheltered for some period of time.

In 1880, a researcher named Ussher investigated the site and published his findings, recording a collection of artefacts that reads like a condensed inventory of everyday life. There were whetstones for sharpening blades, hammer stones, and flint flakes, the kind of basic toolkit associated with practical, manual work. Alongside these were two iron knives, an iron chisel, a nail, and some slag, the waste residue left over from iron-working. A fragment of jet, a hard black mineral sometimes carved into decorative objects in early medieval Ireland, appeared alongside a single shard of wheel-made pottery and bones from domestic animals. Wheel-made pottery, produced on a rotating wheel rather than built by hand, became common in Ireland during the early medieval period, which gives at least a broad hint at dating, though Ussher drew no firm conclusions. No plans or cross-sections of the cave were ever published, which means the spatial relationship between these objects, whether they were clustered together or spread across distinct areas of the cave, is simply not known.