What exactly it is remains, for the moment, genuinely unclear. The site is listed simply as a structure, a designation that can encompass almost anything from a collapsed field wall to the remnants of a medieval building, and the details that would distinguish one from the other have not yet been made publicly available.

Drumharsna sits in east Galway, a part of the county whose landscape holds a long and layered human presence, from prehistoric enclosures and early Christian remains to post-medieval agricultural features. Without more specific information attached to this particular record, it is not possible to say with any confidence when the structure was built, by whom, or for what purpose. That absence is itself a kind of fact. Ireland's archaeological record is vast, and the work of documenting, contextualising, and publishing information about every recorded monument is ongoing. Some sites wait years before their details are formally written up and circulated. This one is among them.