Best attractions and places to see around Tullyvallan include a blend of historical landmarks, natural features, and cultural sites within County Armagh. The area is characterized by its scenic landscapes, including the Callan River Valley and the Slieve Gullion region. Visitors can explore ancient monuments and impressive engineering structures that reflect the region's past. This region offers a variety of points of interest for those exploring the outdoors.
Last updated: July 8, 2026
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The dam is easy to cross and from there you have a great view over the lake and the rolling hills that surround it. The peaceful atmosphere is only occasionally interrupted by the gentle rippling of the water. The reservoir provides fresh drinking water to the surrounding area and the trout fishery here is controlled by the Armagh Angling Club - so it's an interesting spot for anglers. Even if you're not here to fish, the scenery is simply relaxing and it's worth stopping for a few minutes and looking around. The roads around the lake are easy to drive on but there might be a few potholes in places - nothing that would stop a real cyclist. Overall a nice stop to enjoy nature and take a quick breather before moving on.
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The Tassagh Viaduct rises above the Callan River Valley with its massive arches - a silent witness to bygone railway times. The line, which was originally part of the Castleblayney, Keady and Armagh Railway, opened in 1910 and once carried trains across the valley. Today the tracks have disappeared, but the impressive structure remains and blends beautifully into the green landscape. As I drove under the arches, I felt like I was experiencing a piece of history up close. Looking up at the imposing stone arches makes you pause for a moment and marvel. The old Beetling Mill is also nearby, a reminder of the region's industrial past. If you have a bit of time, a little detour there is worth it. The roads in the area are mostly in good condition, but there are also a few bumpy spots - nothing that will bother an experienced cyclist. Overall, a worthwhile stop that will appeal to more than just railway enthusiasts.
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The Ballykeel Dolmen, also known as the "Witch's Chair", stands alone on the edge of a green river terrace and invites you to take a look back into the past. With its three supporting stones and the imposing capstone, over three metres long, the dolmen looks like a stone sculpture left behind by a long-forgotten culture. The simple but distinctive tripod shape is a testament to the archaic construction that attracted people to this place over 4000 years ago. Excavations around the dolmen have uncovered the remains of a stone mound and Neolithic pottery that tell of the rites and customs of this early community. When you stand among the stones, you feel the mystique of the place - a place that inspires the imagination then and now. Nearby you will find other megalithic structures such as the Portal Tomb of Aughadanove, which together reflect the rich archaeological heritage of the region.
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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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To be able to see the Ballykeel dolmen, you'll need to take a small detour from Mill Road onto Ballykeel Road. Here, you can view the Ballykeel dolmen and cairn, which is dated between 4000 and 2500 BC
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This lough, located between the northern and southern burial cairns of Slieve Gullion, is the highest in Northern Ireland.
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This dolmen is a monument that has a tripod shape. At the southern end of a tumulus, its capstone is three meters long. It is dated between 4000 and 2500 BC.
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A pretty reservoir that supplies water to the surrounding area and has some Trout fishing
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You can explore several natural features, including the scenic Calliagh Beara Lough, which is the highest lough in Northern Ireland and located on Slieve Gullion. The Seagahan Reservoir offers views across County Armagh and is a key water supply for the area. The Callan River Valley also provides picturesque settings.
The area is rich in history. You can visit the North Cairn of Slieve Gullion, a Bronze Age burial site where two stone boxes were discovered. The Ballykeel Dolmen, a significant prehistoric monument dating back to between 4000 and 2500 BC, is also nearby. Additionally, the impressive Tassagh Viaduct, a remnant of the Castleblayney, Keady, and Armagh Railway, showcases the region's industrial past.
Yes, the Seagahan Reservoir is considered family-friendly, offering opportunities to cycle across the dam wall and enjoy the views. The Ballykeel Dolmen is also noted as a family-friendly historical site to explore.
You can find various outdoor activities, including hiking and running. For easy hikes, explore routes like the Lough Muckno loops or the Ballymoyer Woodland loop. Running enthusiasts can try the moderate 'The Poets Trails: Ballykeel running loop' in the Ring of Gullion. For more details on these and other routes, refer to the Easy hikes around Tullyvallan and Running Trails around Tullyvallan guides.
Yes, there are several cycling routes. You can find options like the 'Castleblayney and Lough Muckno loop' or longer, more challenging routes such as the 'Seagahan Reservoir loop from Newtownhamilton'. For a comprehensive list of routes, visit the Cycling around Tullyvallan guide.
The North Cairn of Slieve Gullion is a Bronze Age burial site, approximately 18 meters in diameter. Excavations here revealed two stone boxes, offering a glimpse into ancient burial practices. It is located right next to Calliagh Beara's Lough, adding to the area's mystical atmosphere.
The Tassagh Viaduct is an impressive man-made monument featuring massive arches that span the Callan River Valley. It was part of the historic Castleblayney, Keady, and Armagh Railway, which opened in 1910. While the tracks are gone, the structure remains, blending beautifully into the green landscape and offering a historical perspective on the region's past. An old Beetling Mill is also nearby.
Beyond Tullyvallan, the broader County Armagh offers significant historical sites.
Navan Fort is Ulster's most important archaeological site, steeped in legend. Also, Gosford Castle, a 200-year-old structure, is known for its appearance in *Game of Thrones*.
Visitors appreciate the blend of historical landmarks and natural beauty. Highlights like the Tassagh Viaduct are admired for their impressive structure and historical context, while the serene views from Seagahan Reservoir and the ancient mystique of the North Cairn of Slieve Gullion are highly valued. The komoot community has shared over 7 photos and given more than 15 upvotes to these attractions.
The region's natural beauty can be enjoyed throughout the year. Spring and summer offer pleasant weather for outdoor activities and exploring the natural features. Autumn brings beautiful foliage, while winter can provide a different, serene perspective, though some trails might be more challenging.
While specific parking details for each attraction are not always listed, many natural and historical sites in rural areas like Tullyvallan typically have designated parking areas or roadside pull-offs. For popular spots like Slieve Gullion Forest Park (where the North Cairn and Calliagh Beara Lough are located), visitor parking facilities are generally available.


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