What was found here was not a settlement in the conventional sense, but the traces of metalworking activity, specifically a bowl furnace, the kind of shallow pit or hollow used to generate the intense, focused heat needed to smelt or work iron. The association of such a furnace with a carefully bounded enclosure gives the site an oddly deliberate quality, as though this patch of ground was set aside, marked out, and put to work.

Excavation of the site, catalogued as LI060-010001, was carried out by Bernice Molloy, whose findings are published in McQuade, Molloy and Moriarty's 2009 volume. The enclosure itself took the form of a segmented gully or ditch enclosing a roughly circular area about fifteen metres in diameter, which is not much larger than a generous living room if you were to flatten it out. Radiocarbon dating placed the activity here firmly in the Iron Age, with dates ranging from approximately 357 to 47 BC. The bowl furnace recorded separately as LI060-010002 was found in direct association with this enclosure, suggesting the two features functioned together. Iron Age metalworking sites are not uncommon across Ireland, but the combination of a defined enclosure with a working furnace points to something organised and intentional rather than opportunistic.

Knockcommane is a townland rather than a named monument with a visitor presence, and there is no formal access, interpretive signage, or managed path to the site. The excavation would have taken place as part of development or survey work, and the physical features recorded may no longer be visible above ground. Those with an interest in Iron Age landscapes in Limerick would find the published report the most rewarding point of entry, with the 2009 volume providing the clearest account of what was found, how the features related to one another, and what the radiocarbon evidence suggests about when people were here, crouching over a bowl of burning fuel, working metal in a carefully chosen corner of the Irish midlands.