Best lakes around Tawe-Uchaf are situated within the Brecon Beacons National Park, a region known for its natural landscapes in Powys, Wales. The area features glacial lakes, including Llyn y Fan Fach and Llyn y Fan Fawr, nestled in the Black Mountain range. These bodies of water are integral to the Carmarthenshire Fans, offering a variety of natural features and hiking experiences. The terrain is characterized by sculpted valleys, escarpments, and open moorland.
Last updated: May 2, 2026
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Tucked away in a dreamy, isolated location in the upper Swansea Valley, Craig-y-nos Country Park is a gorgouous 40-acre park that was once owned by Adelina Patti. Now it is a Victorian garden set in woodlands, surrounded by meadows and ponds, dissected by the River Tawe. It is in a gorgeous location, and there is a great cafe there to boot.
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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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Ahhhh Llyn Y Fan Fawr, this glaciated lake is about the nicest place you can be on a hot summers day or even a cold winter's morning. It has been central to my working life in the hills for nearly forty years. It is just so perfectly locacted and makes for a good check point with groups, a rest spot, a camping spot and a perfect wild swimming spot on a hot day. Don't listen to the naysayers, this has been an iconic wild swimming spot for eons. Apart from that it will be a tad cold, it is just about one of the best swim spots in the Brecon Beacons.
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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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Llyn y Fan Fawr is a natural lake in the county of Powys, Wales. It lies at the foot of Fan Brycheiniog, the highest peak of the Black Mountain range within the Brecon Beacons National Park. Created as a result of glacial action, it is one of the largest glacial lakes in southern Wales. The lake is roughly rectangular in shape with its long axis oriented roughly north–south.
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The lakes in Tawe-Uchaf are set within the dramatic landscapes of the Brecon Beacons National Park. You'll encounter stunning glacial cirques, steep escarpments, and open moorland. Notable features include the amphitheatre-like setting of Llyn y Fan Fach, overlooked by Picws Du and Waun Lefrith, and the expansive views from Fan Brycheiniog summit and stone shelter, which overlooks Llyn y Fan Fawr.
The area around Tawe-Uchaf's lakes offers a variety of outdoor activities. You can enjoy challenging hiking trails, such as the Fan Hir Ridge, Fan Brycheiniog & Lyn y Fan Fach loop. There are also numerous running trails and mountain biking routes available. For more details on routes, you can explore the hiking guide, running guide, and MTB guide for Tawe-Uchaf.
Yes, both Llyn y Fan Fach and Llyn y Fan Fawr are popular spots for wild swimming, especially during warmer months. Llyn y Fan Fawr, in particular, is noted as an iconic wild swimming location and is not used as a reservoir, making it suitable for a refreshing dip.
Access to Llyn y Fan Fach typically involves a pleasant 1.5-mile walk from a car park near Llanddeusant. While the initial path to Llyn y Fan Fach is relatively short, many walks around the lakes, especially those incorporating the escarpments like Picws Du summit & view of Llyn y Fan Fach or Fan Brycheiniog summit and stone shelter, can be challenging due to elevation and rugged terrain. There are also easier walks, such as those found in Craig-y-Nos Country Park and Castle.
Yes, there is a car park near Llanddeusant for accessing Llyn y Fan Fach. However, it is small and can get busy. For Llyn y Fan Fawr, treks often start from areas like Tafarn y Garreg pub, which may offer parking. It's advisable to drive slowly on the roads leading to these car parks as they can be quite tight.
While some trails to the glacial lakes can be challenging, Craig-y-Nos Country Park and Castle offers a more family-friendly experience. It features gentle paths, picturesque lakes, and woodlands, making it suitable for families. The park is also known for being very dog-friendly.
The lakes are beautiful year-round, but the warmer months are ideal for activities like wild swimming. Clear days offer expansive views, potentially reaching as far as the Bristol Channel from elevated positions. However, the area's remote nature means it provides a profound sense of wilderness at any time, with opportunities to spot wildlife like wild horses and kites.
Yes, Llyn y Fan Fach is famously entwined with Welsh folklore, being the setting for the captivating legend of 'The Lady of the Lake'. This adds a mystical element to the already stunning natural beauty of the area.
Llyn y Fan Fach is celebrated for its stunning vistas, tranquil ambiance, and deep connection to Welsh folklore through the legend of 'The Lady of the Lake'. It offers a sense of escape and is a popular spot for wild swimming. The lake is dramatically overlooked by peaks like Picws Du and Waun Lefrith, creating an impressive amphitheatre-like setting.
Llyn y Fan Fawr offers a challenging yet highly rewarding hiking experience. It's the larger of the two glacial lakes in the Black Mountain range, known for its remote and isolated nature. You can expect expansive views across open moorland, and it's a great spot for wild swimming. The lake is also the source of the River Tawe.
While the glacial lakes themselves are in remote areas, you can find amenities nearby. For instance, a trek to Llyn y Fan Fawr can start from the Tafarn y Garreg pub. Additionally, Craig-y-Nos Country Park and Castle, which features its own lakes, has a great cafe on-site and accommodation options in the surrounding area.
Many trails in the Brecon Beacons National Park are dog-friendly, and the remote nature of the lakes allows for walks with dogs. Craig-y-Nos Country Park and Castle is particularly renowned for being very dog-friendly, with acres of fields to explore.


Still not found your perfect lake around Tawe-Uchaf? Check out the guides of these regions to see even more beautiful places.