Best lakes around Ystradgynlais are found within the Brecon Beacons National Park, offering diverse natural landscapes. The area is characterized by glacial lakes like Llyn y Fan Fach and Llyn y Fan Fawr, set against the Black Mountain escarpment. Additionally, ornamental lakes are present within Craig-y-Nos Country Park. These locations provide opportunities for outdoor activities and are notable for their natural beauty and historical significance.
Last updated: August 24, 2026
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I've seen that this is an amazing spot to watch the sunrise online!! it takes about 40-60 mins to get to the summit. wrap up warm!
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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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Beautiful hike! Appropriate footwear is a must! Lady of the Lake story lays here one that will send chills upon you. Links with king Arthur, Merlin the wizard and his apprentice nimwae. Magical majestic creatures and stories to be found in the history of the area
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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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This route up the western flanks of Llyn Y Fan Fach is one of the best views in the entire Brecon Beacons. To do the Llyn y Fan Fach and Llyn y Fan Fawr circular walk will give you a memorable walk and simply astonishing views. You will take in two stunning glacial lakes, miles of epic ridge lines and mountain views that will remind you of loftier mountain ranges. It all starts here with your gaze across the glacial bowl of Llyn Y Fan Fach, truly one of the mountain gems of Wales.
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A quieter route that leads to the lake. Beautiful and challenging. ideal for all weathers.
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High elevation trail to benefit from amazing views, enjoy 😉
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The lakes around Ystradgynlais are primarily glacial, nestled within the dramatic Black Mountain escarpment of the Brecon Beacons National Park. You can expect breathtaking views, especially from the ridges above lakes like Llyn y Fan Fach and Llyn y Fan Fawr. The landscape features dark, reflective waters, green hills, and sculpted valleys, with panoramic views that can extend to the Bristol Channel on clear days.
Yes, Llyn y Fan Fach is famously associated with the Welsh folklore legend of 'the Lady of the Lake,' a romantic myth about a fairy princess. Additionally, Craig-y-Nos Country Park features ornamental lakes within 40 acres of Victorian gardens, once owned by the famous opera singer Adelina Patti, adding a touch of historical grandeur.
The lakes offer a range of outdoor activities. Hiking is very popular, with routes around and above the lakes, including challenging ridge walks. Llyn y Fan Fawr is also a popular spot for wild swimming. For other activities, you can explore running trails, gravel biking routes, and road cycling routes in the wider Ystradgynlais area.
Yes, Craig-y-Nos Country Park is particularly family-friendly, offering gentle, easy-to-follow paths suitable for all ages and abilities, including those with prams or dogs. It also has a visitor center and a tea room. While the path to Llyn y Fan Fach is well-defined, it does have some steep sections.
The lakes can be enjoyed year-round, but for the most pleasant hiking and outdoor activities, spring and summer offer milder weather and longer daylight hours. Autumn brings beautiful colors to the landscape. Winter hiking is possible, but conditions can be challenging, especially on higher ridges. Always check local weather forecasts before your visit.
Yes, Llyn y Fan Fawr is a popular and iconic spot for wild swimming. Unlike its smaller counterpart, it is not used for water supply, making it suitable for a refreshing dip on a warm day. Be aware that the water will be cold, even in summer.
The remote and untouched landscapes around lakes like Llyn y Fan Fach offer opportunities to spot various birds, including red kites, common buzzards, kestrels, carrion crows, common ravens, and skylarks. The diverse habitats of Craig-y-Nos Country Park also support woodland flora, fungi, and a variety of birds and mini-beasts.
While the glacial lakes like Llyn y Fan Fach and Llyn y Fan Fawr are quite remote with limited facilities, Craig-y-Nos Country Park has a visitor center and a tea room. The area around Craig-y-Nos also offers accommodation options, including the historic Craig-y-Nos Castle which is now a hotel, making it a good base for exploring the region.
There is a small car park available for visitors heading to Llyn y Fan Fach, though it can get busy. The road leading to it can be narrow and bumpy, so drive slowly. Craig-y-Nos Country Park also has parking facilities for visitors.
The Black Mountain escarpment, which cradles lakes like Llyn y Fan Fach and Llyn y Fan Fawr, is known for its dramatic glacial formations and offers excellent ridge walking. Peaks like Fan Brycheiniog and Picws Du provide challenging routes with spectacular panoramic views of the lakes and the wider Welsh countryside. The main route of the Beacons Way also runs along the ridge above Llyn y Fan Fawr.
Llyn y Fan Fawr offers a more remote and isolated experience compared to Llyn y Fan Fach, which can get quite busy due to its easier access and folklore. If you're seeking challenging hikes and a true sense of wilderness, Llyn y Fan Fawr is an excellent choice.


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