
The Ghost Light on Binnian
A blue phosphorescent glow on the slopes of <em>Beann Each</em> — the restless spirit of a woman buried on the mountain, and the ancient watchtowers the Tuatha Dé Danann left behind.
Location
Slieve Binnian, Mourne Mountains
Time Needed
3–4 hours (summit return)
Difficulty
Moderate–Strenuous (747m)
Best Season
Spring–Autumn
Distance
~7 km return
The Story
The Light on the Mountain
Walkers on Slieve Binnian — Beann Each, the Peak of the Horses — have reported it for generations. A ball of cold, blue light drifting across the upper slopes after dark. Not a torch. Not a phone screen. Something older. It moves with purpose but no path, hovering above the heather before vanishing into the granite. Locals around Cill Chaoil (Kilkeel) call it the ghost light, and most of them can tell you exactly what it is.
The story is old and sad. A young woman — her name lost to time — was murdered and buried in a shallow grave somewhere on Binnian's slopes. No one was ever held to account. Her spirit, the storytellers say, has never rested. The blue light is her, still moving across the mountain she was never allowed to leave. Sightings cluster along Head Road between Kilkeel and Annalong as well as on the higher ground near the summit. The light appears and fades. It never stays long enough to approach.
“A ball of cold, blue light drifting across the upper slopes after dark. Not a torch. Not a phone screen. Something far older.”

Watchtowers of the Tuatha Dé Danann
The ghost light is not the only strange thing about Binnian. Just below the summit, a series of enormous granite tors rise from the ridge like broken teeth. They are called the Back Castles — stacks of weathered rock, sculpted by millennia of frost and wind into shapes that look deliberately placed. Some stand ten metres tall, balanced in ways that seem to defy gravity.
In Mourne folklore, these tors are associated with the Tuatha Dé Danann — the pre-Christian gods of Ireland, the people of the goddess Danu. The stories say the Back Castles are their watchtowers, built to guard the mountain passes into the otherworld. Whether you believe the geology or the legend, standing among them is an uncanny experience. The shapes feel too deliberate, too architectural, to be random. Mist makes it worse. Or better, depending on your temperament.
“The Back Castles feel too deliberate, too architectural, to be random. Mist makes it worse. Or better, depending on your temperament.”

A Landscape That Holds Its Stories
What makes the ghost light story endure is the mountain itself. Slieve Binnian is one of the more remote peaks in the Mournes. The walk from Carraig Beag (Carrick Little — 'the small rock') takes you along the shore of a reservoir and then up through rough ground into a landscape that feels genuinely wild. There are no waymarked posts on the upper slopes. No handrails. Just heather, granite, and the sky.
On a clear day, the views from Binnian's summit take in the entire Mourne range, the reservoir of Silent Valley far below, and the coast stretching south toward Carlingford Lough. On a grey day, with cloud wrapping the tors in mist, you understand why people saw watchtowers and ghost lights up here. The landscape invites it. The stories are inseparable from the place — and the only way to understand that is to stand there yourself.
“On a grey day, with cloud wrapping the tors in mist, you understand why people saw watchtowers and ghost lights up here.”
The Place
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The route from Carrick Little car park to the summit of Slieve Binnian, passing Blue Lough and the Back Castles.
Slieve Binnian sits in the southern Mournes, overlooking the Silent Valley reservoir. The standard approach is from <em>Carraig Beag</em> (Carrick Little) car park on the eastern side — a small gravel car park at the end of a narrow lane above Annalong.
The path follows the Annalong Valley alongside the reservoir before climbing steeply through rough ground to the summit ridge. Blue Lough sits in a dramatic corrie below the north face. The Back Castles are just beyond the summit cairn on the western side — you'll see the first tors as you approach the top. The full circuit takes 3–4 hours at a steady pace.
Coordinates
Slieve Binnian Summit:
54.1420°N, 5.9600°W
The Back Castles:
54.1410°N, 5.9630°W
Carrick Little Car Park:
54.1560°N, 5.9530°W
Parking
Carrick Little Car Park:
Free gravel car park at the end of Carrick Little Road, above Annalong. Space for around 15–20 cars. Can fill early on summer weekends — arrive before 9am to be safe.
Alternative:
Ben Crom car park (Silent Valley side) offers an alternative approach from the west but is a longer walk.
The Visit
This is a proper mountain walk, not a stroll. Binnian demands decent boots, a waterproof layer, and an awareness that the weather in the Mournes can change fast. But the reward is one of the most dramatic summits in Northern Ireland — and a landscape that makes every ghost story feel entirely plausible.
Carrick Little
Carrick Little (Carraig Beag) car park, above Annalong. Follow the track south alongside the Annalong Valley, then climb west toward the summit. The path is clear in good visibility.
Finding the Tors
The Back Castles are on the summit ridge just beyond (west of) the main cairn. You'll see them as you approach the top — massive granite stacks rising from the ridge. Walk among them. The scale only registers when you're standing at their base.
Duration
3–4 hours return. Add 30 minutes if you detour to Blue Lough on the way up — which you should.
Difficulty
Moderate to Strenuous. Rough ground on the upper slopes — no waymarked path to the summit. Navigation skills and a map are recommended in poor visibility. The Mournes are small mountains but they produce real mountain weather.
What to Bring
- •Sturdy walking boots with ankle support — the ground is rough and rocky
- •Waterproof jacket and extra layer — it's colder on top than you think
- •OS Map (Sheet 29) or a downloaded offline map — phone signal is patchy
- •Food and water — there's nothing on the mountain
- •A camera — the Back Castles are extraordinarily photogenic
What to Look For
- •The Back Castles — granite tors rising from the summit ridge like ruined towers
- •Blue Lough below the north face — black water in cloud, sapphire in sun
- •Silent Valley reservoir far below to the west
- •The Mourne Wall crossing the summit — 22 miles of hand-built drystone
- •Peregrines and ravens — they nest in the granite crags
The Back Castles. Most walkers summit Binnian, take a photo at the cairn, and turn back. Walk five minutes further west along the ridge and you'll find yourself among ten-metre granite stacks that look like something from another planet. The Tuatha Dé Danann's watchtowers. Stand at their base and look up — it's worth every extra step.
Make a Day of It
Binnian is a half-day mountain. Start early and you'll be back by afternoon with time to explore Annalong harbour or drive south to Kilkeel for fresh seafood.
While You're Here
Three places worth exploring once you’ve visited.
More Stories to Discover
Every mountain, bridge, and ruin has a story. Here are a few more.
Discover
Discover More Stories
Ghost lights, giants, smuggler trails, and ancient tors — the Mourne Mountains are full of stories the guidebooks never tell.
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