4Lecky, John, and M.J.D. "Notes on Some Kerry Antiquities: Cahergal and Other Fort." Kerry Archaeological Magazine 3.13 (1914): 49-54.
This article states, "Inside the fort are remains of two buildings; at the north side a rectangular building, and in the middle a bee-hive cell. Both are much ruined, and the masonry very much more rough and inferior to that of the fort..."
The focus on Cahergal and Leacanabuaile may be circumstantial, as these types of forts are the most likely to survive. as one author noted, "Elsewhere, as we know from both written and archaeological records, houses were normally of timber or clay, or of both combined. In other words, houses, as we might expect, were built of whatever suitable material came most readily to hand. Unfortunately timber and clay houses seldom leave clearly intelligible traces for the excavator. Hence the accidental prominence achieved by sites like Leacanabuaile..." (Duignan, Michael. "Irish Agriculture in Early Historic Times." The Journal of the Royal Society of Antiquaries of Ireland 14.3 (1944): 132-34.)
A partial excavation in 1991concluded, "Very few artefacts were recovered and none that are datable. There was little evidence for activity on the site prior to the construction of the clochán with only a couple of small features clearly predating it." ("Kerry 1991:070 'Cahergal', Kimego West, Stone fort" Excavations.ie. Searchable Database of Irish Excavation Reports. Web. 21 Feb. 2012. <http://www.excavations.ie/Pages/Details.php?Year=&County=Kerry&id=3234>.)