What was once a substantial circular cairn, a mounded heap of stones raised over the dead, has been worn down over centuries until little remains to mark it except a scatter of small stones and a faint scarp, a low earthen edge where the original structure once rose. It measures roughly ten metres across in both directions, which gives some sense of the effort originally involved in its construction, even if little of that effort is now visible above ground.

What makes the site quietly arresting is what the erosion has gradually uncovered. Beneath the denuded cairn, a trapezoidal cist has been recently exposed. A cist is a small stone-lined grave box, typically built to hold a single burial, and this one retains a large rectangular capstone, the slab that would once have sealed the chamber from above. Such monuments generally belong to the Bronze Age, when the practice of placing the dead in stone-lined pits beneath cairns on elevated ground was widespread across Ireland. The hilltop location is entirely characteristic: Moher Hill commands an open view across a broad valley to the south-west, with a panoramic sweep running from west through south to east, the kind of deliberately chosen, visually dominant position that recurs again and again in the Irish prehistoric burial landscape.

The exposed cist is the detail worth seeking out if you find yourself on Moher Hill. The capstone in particular, sitting in the open after what may have been millennia of cover, has a stark, unadorned quality that no amount of context quite prepares you for.