Best mountain peaks around Quarter Bach are situated within the Black Mountain range, an integral part of the Brecon Beacons National Park. This area is characterized by dramatic, glacially-shaped landscapes and offers a wealth of notable mountain peaks. The region features rolling moorland, steep escarpments, and glacial lakes. It provides diverse hiking opportunities for exploring its natural beauty and geological heritage.
Last updated: July 3, 2026
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Garreg Las (Twyn-Swnd) is on the west side of the Black Mountain range, and it is visited far less often than many peaks in the Brecon Beacons. Its remoteness is its draw for me; rarely will you be unindated with a host of other walkers here. It is also hansomely topped by a pair of substansive, rocky ancient cairns. You can come across from the car park on the A4069 Brynaman Road or come up from Llanddeusant; both are equally as appealing, but the Llanddeusant route takes the top slot if you go back via Llyn y Fan Fach; this route has the best views. The views from the summit itself are like the location: raw and remote, but I love the place. It is a good area for a bit of navigation practice. At 635 metres high, it is a UK-listed Nuttall and Hewitt. Tip: Any Welsh place name with Llan in it means it has a church. In this case, Llanddeusant means the church with two saints.
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This is a very undervalued area of the western Brecon Beacons. The walking here is raw and wild, which is one of the reasons why it is also a quieter part of the park, so it will appeal to many. Here you also will find some of the best examples of Iron Age hillforts you can ever hope to see anywhere. Y Garn Goch and Y Gaer Fach are some of the most impressive hill forts in Wales. At 11.2 and 1.5 hectares, respectively, these are impressive structures and in their day provided considerable defensive structures to the native inhabitants. The large stone defensive ramparts, which are large rubble banks today, once stood 10m high and 5m thick. You can access both forts from a small car park at the base of the hill.
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The views down onto Llyn Y Fawr from here is pretty spectacular. This is one of the nicest places in the Brecon Beacons to walk along. Once you have put in the effort to get here, the ridge has a good footpath, there's a nice walled shelter and the views down towards the lake is pretty awesome on a good day.
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A quieter route that leads to the lake. Beautiful and challenging. ideal for all weathers.
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Fan Brycheiniog is the highest peak at a height of 802.5 metres in the Black Mountain region of the Brecon Beacons National Park in southern Wales. There is a trig point at the peak and on the edge of the escarpment, and nearby, a stone shelter with an inner seat.
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Fan Brycheiniog is the highest peak at a height of 802.5 metres in the Black Mountain region of the Brecon Beacons National Park in southern Wales. There is a trig point at the peak and on the edge of the escarpment, and nearby, a stone shelter with an inner seat.
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The Black Mountain range, part of the Brecon Beacons National Park, offers several notable peaks. Fan Brycheiniog is the highest, standing at 802.5 meters (2,633 ft), known for its extensive views and a distinctive stone shelter. Another prominent peak is Picws Du, at 749 meters (2,457 ft), offering dramatic contours and views of Llyn y Fan Fach. Waun Lefrith, the westernmost peak of the Carmarthen Fans, provides excellent aerial views of Llyn y Fan Fach and beyond. For a historical touch, Tair Carn Isaf features ancient Bronze Age cairns.
The peaks around Quarter Bach offer extensive and panoramic views. From Fan Brycheiniog, you can see across rolling moorland, over Llyn y Fan Fawr, and on clear days, as far as the Bristol Channel and Pen y Fan. Picws Du provides breathtaking vistas stretching from the Gower Peninsula to the Cambrian Mountains. Waun Lefrith offers expansive views of Llyn y Fan Fach, Usk Reservoir, and Swansea Bay. Even lower peaks like Tair Carn Isaf provide impressive views south over the Gower Peninsula and west towards Pembrokeshire.
Yes, the region has a rich history. Picws Du features a large Bronze Age round barrow at its summit. Tair Carn Isaf is notable for its three ancient stone cairns, which are Bronze Age burial sites. Additionally, the summit of Garreg Las is topped by two substantial rocky cairns, also thought to be Bronze Age barrows, adding an archaeological dimension to your hike.
The remote and untouched landscape of the Black Mountain range offers opportunities for wildlife spotting. Visitors to peaks like Picws Du may have the chance to see various birds, including red kites, common buzzards, kestrels, carrion crows, common ravens, and skylarks.
The highest peak in the Black Mountain range is Fan Brycheiniog, standing at 802.5 meters (2,633 ft). Its subsidiary peak, Fan Foel, at 781 meters (2,562 ft), is the highest point in Carmarthenshire.
The mountain peaks around Quarter Bach offer diverse hiking routes suitable for various fitness levels. While some peaks like Fan Brycheiniog and Picws Du involve challenging ascents and ridge walks, there are also moderate trails around the glacial lakes and easier options available. For example, Garreg Las is considered an easy summit to reach compared to the higher peaks to the east.
Yes, there are several easy hiking trails in the vicinity of Quarter Bach. You can find options like the Carreg Cennen Castle loop, Herbert's Quarry & Garreg Lwyd loop, and the Tair Carn Isaf Summit loop. For more details on these and other easy routes, you can explore the Easy hikes around Quarter Bach guide.
Beyond hiking the peaks, the area around Quarter Bach offers various outdoor activities. You can find numerous road cycling routes, including challenging rides like 'From Brynaman to Usk Reservoir via Black Mountain'. Mountain biking enthusiasts can explore trails such as the 'Black Mountain loop from Brynamman'. For more options, check out the Road Cycling Routes around Quarter Bach and MTB Trails around Quarter Bach guides.
While the region offers beauty year-round, hiking on a clear day is highly recommended to fully appreciate the extensive panoramic views. Clear conditions allow you to see as far as the Bristol Channel from Fan Brycheiniog and across valleys from Fan Foel. Spring and autumn often provide stable weather and pleasant temperatures, though summer can also be excellent.
Many of the mountain trails in the Black Mountain range are suitable for dogs, especially those that are well-behaved and kept under control. The remote and wild character of the area makes it a great place for dogs to explore. However, always be mindful of livestock, especially during lambing season, and ensure your dog is on a lead when necessary.
Parking options are available at various access points to the Black Mountain range. For instance, Garreg Las can be ascended from Llanddeusant or from a car park on the A4069 Brynaman Road. Specific parking locations often depend on the trailhead you choose for your hike.


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