The stone
The capstone at Kilfeaghan is a single block of granite weighing an estimated 35 tonnes, balanced on two portal stones that have partly sunk into the ground under the load. It runs about 2.5 metres long and roughly 1.5 metres thick. It has sat on this hillside above Carlingford Lough for something like 4,500 years, which puts it among the work of Ireland’s first farmers.
How the builders raised that much granite is the interesting part. The likeliest answer is that they didn’t. Archaeologists think the capstone may have been a glacial erratic already lying on the spot – a boulder dropped by retreating ice – which was then undermined and propped up on uprights rather than hauled into place. That would explain the sheer mass of a stone far heavier than the capstones at most other portal tombs.
The dolmen sits at the north end of a long cairn, now grassed over and much reduced. The mound originally ran downhill to the south for something like 25 metres, so what you see today is the surviving core of a far bigger monument. An excavation early in the twentieth century turned up bone and fragments of pottery. The tomb is in state care under the Department for Communities, and there is no charge to visit.
Getting there
Kilfeaghan is in the townland of the same name on the eastern slopes of Knockshee, about 6km east of Rostrevor on the A2 coast road towards Kilkeel. Turn up Kilfeaghan Road and follow it inland; a small car park near the top of the lane holds about four cars. From there you pass through a green gate and cross a farmyard and field, and the dolmen stands roughly 150 metres on, ringed by a low wire fence under a large oak.
This is a working farm on private land, so treat it accordingly. Close gates behind you, keep clear of livestock, and don’t block the lane – people live along it. The ground is boggy after rain, so wear boots rather than trainers. There are no toilets, no café and no interpretation panel, and the signage such as it is has taken a battering over the years. The site is marked on maps but easy to walk past.
The setting
The reward for the short trudge is the position. The tomb looks south-west down Carlingford Lough, with the Cooley Mountains of Co Louth rising on the far shore and the Mourne Mountains at your back. On a clear day you can see why the builders chose this ledge: it commands the whole sweep of the lough. Come in low winter light and the capstone throws a long shadow across the field.
A tip before you go
Go after a dry spell – the field turns to mud quickly, and there’s nowhere to scrape your boots. Pair it with an afternoon in Rostrevor and the forest walks at Kilbroney Park, ten minutes back down the coast road, which has a car park, toilets and a café for when you’re done crossing fields.