It is the kind of site that would never appear on a casual walk through the landscape, and yet it is unambiguously there.

The enclosure came to light through a geophysical survey carried out in 2012 by Aidan Harte and James O'Driscoll of Munster Archaeology. Geophysical survey is a non-invasive technique that measures variations in soil chemistry, moisture, and magnetism to detect buried features such as ditches, pits, walls, and floors without breaking the surface. The work at Clonrobin was part of a broader archaeological impact assessment, suggesting the area was being evaluated ahead of some form of development. The enclosure, catalogued as G8b within that assessment, was one of several features identified in the process. What it enclosed, when it was built, and by whom remain open questions; the survey established its presence but the unpublished report stops well short of interpretation.