This is a cashel, a ringfort built from stone rather than the earthen banks more common in lower-lying parts of Ireland, and the choice of this exposed summit site is itself a puzzle worth sitting with. The views stretch far to the north and west, which may have been the point entirely.

The enclosure measures roughly 24.5 metres north to south and 22 metres east to west, its boundary formed by a stone bank between 1.2 and 1.6 metres wide, with granite slabs and boulders forming kerbs on both the inner and outer faces. The main entrance is on the flattened southern side, where the gap widens as it opens outward, from about 0.85 metres at the inner face to 1.75 metres at the outer, a funnel shape that would have controlled movement in and out. A break in the bank to the north may represent a second access point, possibly with a ramp. Inside, just north of centre, the remains of an oval structure measuring 7 by 5 metres are visible as a scatter of loose stones and set boulders, with its own narrow entrance on the west side. A small cairn at the northern edge of this inner structure may be a trigonometrical survey point added in much later centuries, a reminder that the site has been useful to more than one generation for more than one purpose.