This one does none of that. Sitting in low-lying marshy pasture in the townland of Rannagh, County Clare, a subcircular enclosure roughly thirty metres in diameter appears clearly enough when viewed from the air, captured in orthophotography from both 1995 and 2005, yet when a surveyor visited in 1998 and stood on the ground itself, there was nothing to see. The feature had, in effect, vanished at eye level, surviving only as a ghost detectable from above.

The enclosure sits about forty metres north of a stream that marks the townland boundary, in ground that is overlooked on all sides by higher terrain. That topography, low and damp, hemmed in by rising land, may partly explain why no trace of it appears on the Ordnance Survey six-inch maps, the nineteenth-century series that recorded most earthworks of any prominence across Ireland. Whether the feature was already too faint for Victorian surveyors to notice, or whether it lay so inconspicuously in saturated pasture that it simply escaped attention, is difficult to say. What the aerial images reveal is a subcircular plan, the kind of outline associated with early enclosures of various types across the Irish countryside, ranging from enclosed farmsteads to ritual or boundary features, though nothing in what is currently known about this particular site settles the question of its origin or purpose.

For anyone curious enough to visit, the practical reality is that this is working agricultural land in poorly drained ground, and the feature offers nothing visible at surface level. The aerial images remain the clearest record of it, and the stream to the south still traces the old townland boundary as it always has.