Best mountain peaks around Foughill Otra are found within the wider County Armagh, particularly in the South Armagh region. This area is characterized by notable hills and mountains, offering a blend of natural beauty and historical significance. The landscape includes unique geological formations and provides panoramic views across the region. Visitors can explore a variety of peaks that showcase the diverse terrain of Northern Ireland.
Last updated: July 2, 2026
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Carnavaddy isn't quite an official mountain at 475 m (1,558 ft), but it's a prominent mountain and commands great views down the peninsula and out to sea. It can be walked from either side and is often combined with Clermont Carn to the north to make an excellent mountain day.
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As soon as you cross the gentle ridge of Slieve Gullion, the North Cairn stretches out before you - a slightly smaller hill than its southern neighbour, but no less impressive. The stones that gather here seem like silent sentinels, witnesses of the distant Bronze Age. Two ancient stone boxes were once found here during excavations, which lay hidden in the depths of history. The North Cairn, with its diameter of around 18 metres, invites you to pause for a moment and enjoy the peace. But it is not just the Cairn that is fascinating. Right next to it lies "Calliagh Beara's Lough", a quiet mountain lake that, according to legend, is the home of the witch Beara. On a clear day, the sky is reflected in the calm waters and you can almost feel the ancient magic of this place coming to life. The road here may be rocky, but the landscape rewards with sweeping views and a touch of mysticism that makes Slieve Gullion something special.
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At the highest point of the Black Mountain you are greeted by spectacular views of the surrounding landscape and the Irish Sea.
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At the heart of the Ring of Gullion AONB, you'll find this beautiful mountain, which represents the highest point in the county with an elevation of 573 meters (1,880 ft). Right next to it there is a burial cairn.
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Slieve Gullion, whose name sounds as poetic in English as "Sliabh gCuillinn" in Irish, rises majestically in the "Ó Fiaich Country" in the south of County Armagh in Northern Ireland. At 573 meters high, it not only hides a geological wonder in the form of an extinct volcano, but also the highest Passage Tomb in the British Isles. This passage tomb is particularly mysterious because its entrance is aligned exactly towards the point where the sun sets on the winter solstice. The best place to start your hike is from the Slieve Gullion viewing platform, where there is not only plenty of parking, but also space to stay overnight in a motorhome. From there a clearly marked path, demarcated by a staircase of large rocks, leads to the South Cairn. The transition between the South Cairn and the North Cairn is soft and wet, making the path a true nature experience. However, it should be noted that the descent from the North Cairn back to the viewing platform is rather steep and not always clear. From the summit, hikers are treated to a breathtaking panorama. The view sweeps over the landscape all around and you quickly understand why this area has been classified as an "Area of Outstanding Natural Beauty". The "Slieve Gullion Forest Park" landscape protection area extends over large heath areas on the sunlit mountain slopes. For those who want to experience the full spectrum of this stunning area, there is the 57km long waymarked Ring of Gullion Way. A 13 km long section of this circular hiking trail, the “Slieve Gullion Walk”, leads from the car park at Meigh directly to the summit and back again.
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Wikipedia (Clermont Carn (Irish: Carnán Mhaighréid Náir), 2022-11-03): https://en.m.wikipedia.org/wiki/Clermont_Carn Wikipedia (Clermont Carn transmission site, 2022-11-03): https://en.m.wikipedia.org/wiki/Clermont_Carn_transmission_site Wikipedia (Cooley Mountains, 2022-11-03): https://en.m.wikipedia.org/wiki/Cooley_Mountains MountainViews.ie (Clermont Carn, 2022-11-03): https://mountainviews.ie/summit/434/ - Viewpoint (Carlingford Lough, Dundalk, …) - Transmission site (2RN (RTÉ Networks), Saorview, …) - Neolithic burial cairn
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The climb up the north side of Black Mountain challenges you right from the start - the first half kilometre feels like a wall before it levels out a bit. But don't be fooled, there's a final kick just before the summit that will make your legs feel what they've done. Once at the top, you'll be rewarded with impressive views of the surrounding countryside that will make you feel like you're standing on top of the world. The route itself runs right along the border between Ireland and Northern Ireland, which creates a special atmosphere. Keep warm in changing weather and be prepared for sudden showers - the wind can pick up quickly up here. The descent requires some caution, as some parts are steep and the tarmac isn't always perfect. But that's what makes it so appealing - an adventure worth it and an experience to remember.
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The most prominent peak in the region is Slieve Gullion Summit, which is the highest point in County Armagh. Other notable peaks include Clermont Carn Summit and Carnavaddy Summit, both offering excellent views.
Yes, Slieve Gullion Summit is home to the South Cairn, the highest surviving passage tomb in Ireland, dating back to around 3,000 BC. You can even enter the tomb. Nearby, you'll find the North Cairn, where Bronze Age stone boxes were discovered. Clermont Carn Summit also features a Neolithic burial cairn.
From Slieve Gullion Summit, you can enjoy breathtaking 360-degree panoramic views across nine counties, including the Mourne Mountains and Cooley Peninsula, on clear days. Clermont Carn Summit offers spectacular views of the surrounding landscape and the Irish Sea, while Carnavaddy Summit provides great vistas down the peninsula and out to sea.
Slieve Gullion is particularly notable as an extinct volcano and was the first ring dyke in the world to be geologically mapped. This unique formation is the centerpiece of the Ring of Gullion Area of Outstanding Natural Beauty (AONB).
While some summit trails can be challenging, the Slieve Gullion Forest Park, which serves as a starting point for the Slieve Gullion Summit trail, offers amenities and woodland paths that can be enjoyed by families. The park itself provides a more accessible outdoor experience before tackling the summit.
Trails to Slieve Gullion Summit and Black Mountain North Side are generally considered challenging, with steep sections. The Slieve Gullion Summit Trail is an 8km loop with moderate to strenuous sections. Clermont Carn Summit and Carnavaddy Summit offer intermediate hiking experiences.
The area around Foughill Otra offers a variety of outdoor activities. You can explore numerous hiking trails, such as the Ravensdale Forest loops or the Slieve Gullion loops. There are also dedicated running trails and cycling routes, including those around Ravensdale Forest and the Ring of Gullion. For more details, check out the Hiking around Foughill Otra, Running Trails around Foughill Otra, and Cycling around Foughill Otra guides.
For Slieve Gullion, the Slieve Gullion Summit Trail is an 8km loop starting from Slieve Gullion Forest Park. Other options include the 13 km long “Slieve Gullion Walk” from the parking lot near Meigh. You can also find routes like the Slieve Gullion loop from Forkhill Road or the Slieve Gullion Summit – Calliagh Beara Lough loop from Ring of Gullion AONB in the Hiking around Foughill Otra guide.
Visitors frequently highlight the fantastic all-around views from the summit, the unique experience of entering the ancient passage tomb, and the mystical atmosphere around Calliagh Beara's Lough. The blend of challenging hiking, rich history, and stunning natural landscapes makes it a memorable adventure.
The best time to hike is generally during clearer weather to fully appreciate the panoramic views. Be prepared for changing weather conditions, especially on exposed peaks like Black Mountain North Side, where wind and sudden showers can occur. Waterproof footwear is advisable, as some trails, like those on Camlough Mountain, can be soggy.
Yes, for Slieve Gullion, there is ample parking space at the Slieve Gullion Viewing Platform within the Slieve Gullion Forest Park, which serves as a convenient starting point for the summit trail.
Beyond the geological formation of Slieve Gullion as an extinct volcano, you'll find Calliagh Beara's Lough, a serene mountain lake near the summit of Slieve Gullion, adding to the area's mystique and natural beauty.


See even more amazing summits around Foughill Otra with these guides: