No depression in the ground, no exposed stonework, no marker of any kind. What remains is purely a matter of local memory: the land here is reputed to conceal a souterrain, and that reputation is, at present, the only evidence available.

A souterrain is an underground passage or chamber, typically constructed from dry-stone walling and roofed with large flat slabs, built during the early medieval period in Ireland as a place of refuge, cold storage, or concealment. Hundreds survive across the country, often discovered by accident when a field is ploughed or when livestock break through a hidden roof. The one at Lyranes belongs to a different category: recorded in the archaeological survey of the Iveragh Peninsula compiled by A. O'Sullivan and J. Sheehan, it was noted as a local tradition rather than a confirmed structure, with no visible surface trace surviving at the time of survey. Whether it was robbed out for building material, collapsed inward without leaving a mark, or simply never existed in the form the tradition describes, the record does not say.