This one does neither. On the southern bank of the Morningstar River in County Limerick, where the water marks the boundary between two townlands, a possible prehistoric barrow sits in wet, unimproved pasture without leaving so much as a ripple on the surface that a casual visitor could see. A barrow, in this context, is a burial mound of the type raised during the Bronze Age or earlier, typically a low circular earthwork heaped over human remains. What makes this site unusual is less what it contains than how tenuously it exists in the record at all.

The site came to light not through excavation or fieldwork on the ground, but through the examination of aerial photographs taken on 3 November 1984 during a survey conducted for Bórd Gáis Éireann as part of a gas pipeline project. Crop marks or soil discolouration visible from the air can reveal buried or levelled features that are entirely invisible at ground level, and it was through exactly this kind of photographic analysis that the feature was assigned the site number 040273 and tentatively classified as a possible barrow. It was subsequently listed by Grogan in 1989, catalogued under the name Adamstown 2 in the second volume of that survey. The designation as a possible rather than confirmed barrow reflects the limits of what aerial photography alone can establish; no excavation appears to have followed, and more recent satellite imagery on Google Earth shows no surface remains whatsoever.

For anyone curious enough to seek it out, the site lies in rough, wet pasture along the Morningstar River, and the going underfoot is likely to be soft in all but the driest months. There is nothing to see at ground level, which is itself a kind of point. The interest here is almost entirely conceptual, a landscape feature that exists primarily as a mark on a photograph taken from altitude forty years ago, a catalogued entry in an academic volume, and a set of coordinates in a field beside a river. If you do visit, the Morningstar River and the townland boundary it traces are the most reliable orientation; the site sits just to the south of that line, somewhere in the grass.