In 1910, whilst demolishing an old cottage at this location, workers uncovered several large dressed stones and a cannon ball, prompting local antiquarian Delap to propose that a castle once stood here. These tantalising finds suggested a fortified structure had occupied this strategic position above the water, though the exact nature and date of any such building remains unclear.

Today, no visible traces of these discoveries survive at the site. The dressed stones and cannon ball that sparked speculation about a medieval stronghold have long since vanished, leaving only the documentary record of their existence. The location itself, with its commanding views across the estuary, certainly fits the pattern of defensive sites chosen throughout Kerry’s turbulent history; whether for Norman fortifications, tower houses of Gaelic lords, or later defensive structures.

The absence of physical evidence makes it impossible to confirm Delap’s castle theory, yet the discovery of worked stone and military ordnance during building work hints at a site of some significance. Such chance finds during construction or demolition were common in early 20th century Ireland, often providing fleeting glimpses of hidden histories before the evidence disappeared into building rubble or private collections. Garranebane joins a long list of Irish sites where tantalising clues point to lost structures, their stories preserved only through the diligent recording of local historians and antiquarians.