Kilmogue Portal Tomb – known locally as Leac an Scail, the stone of the warrior – is the tallest portal tomb in Ireland. Its capstone alone measures 4.5 metres long, and the whole structure rises nearly 4 metres from the ground. That puts it in a different league to most of the country’s dolmens: this one was built to impress, and 5,000 years later, it still does. You’ll also hear it called Harristown Dolmen, after the nearby crossroads.
The monument
The tomb sits on a slight rise in a pasture field, a kilometre or so off the R697 south of Mullinavat. Three upright stones – two portal stones standing about 3.7 metres high and a backstone – support a single enormous capstone that tilts slightly towards the east. The builders used local granite with quartz veins; estimates put its weight at 60 tonnes, and the effort required to move and lift it into place boggles the mind. A smaller horizontal stone, the pillow stone, rests on the backstone and partly covers the chamber where burials would have been placed, though no bones remain.
A low kerb running around the base outlines what was once a cairn of stones, long since robbed for field walls. The portal stones are matched in scale only by a handful of similar tombs like Poulnabrone in Clare and Brownshill in Carlow.
Location and access
The tomb is signposted from a minor road off the R697. Pull in at the small lay-by near the farm gate – space for two cars, maybe three if you’re polite. From there, cross the stile and follow the path across the field. The walk takes about five minutes. In wet weather the ground gets boggy, so wellies or sturdy boots are a good idea.
The site is on private land, but the farmer tolerates visitors. Keep gates closed, leave no litter, and give the cows a wide berth if the field is occupied.
What to see
Up close, the scale of the capstone is the thing. Walk underneath it – careful of low clearance – and look up at the rough underside. The builders shaped the stone only enough to make it stable; the rest stays as nature made it. The entrance faces northeast, towards the summer solstice sunrise, and a door-stone still sits in place. This orientation is typical of portal tombs, though the exact purpose – burial, ritual marker, or something else – remains unknown.
The view from the site isn’t dramatic – rolling south Kilkenny farmland – but the isolation adds to the atmosphere. This is not a polished visitor attraction. No interpretive panels, no car park, no café. Just the stone.
Mythology and name
The Irish name Leac an Scail means “the stone of the warrior”, and local tradition says a hero from the Fianna cycles lies buried here. But the name carries other shades: Leac an Scáil can also mean “the stone of the shadow or ghost” – the phantom’s stone. Like many megalithic sites, folk memory connected the enormous stones to giants and champions. The name alone makes it one of the more evocatively named tombs in Ireland.
The place name Kilmogue comes from the Irish Cill Mhóg, likely a church founded by or dedicated to St Mogue. No trace of that church survives above ground; the dolmen is all that remains.
Practical tips
- When to go: Any time of year, though the grass can be long in summer and wet in winter.
- Duration: 15–20 minutes on site, plus the walk from the road.
- Cost: Free. No booking needed.
- Accessibility: Not wheelchair-friendly. The stile and uneven ground rule out pushchairs too.
- Dogs: Allowed on a lead, but mind livestock.
- Nearby: Combine with a visit to Knockroe Passage Tomb for a twin-solstice chamber, or Kilree Round Tower to see Kilkenny’s other ancient monuments.
If you have time for only one megalithic site in Kilkenny, make it this one. It’s the real thing – no ticket booth, no crowds, just a 60-tonne mystery left in a field.