4.4
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16,609
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Waterfall hiking trails around Onllwyn are situated on the western edge of the Bannau Brycheiniog (Brecon Beacons) National Park, an area renowned for its "Waterfall Country." The landscape is characterized by deep river valleys, wooded gorges, and open moorland, providing diverse ecosystems for exploration. This region features numerous waterfalls, including Henrhyd Falls, the tallest in southern Wales, and the popular Four Waterfalls Walk.
Last updated: June 28, 2026
4
hikers
16.9km
04:37
250m
250m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5
hikers
11.8km
03:12
160m
160m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.5
(2)
2
hikers
5.03km
01:21
60m
60m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Graig Llech Woods occupy the wooded gorge carved by the Nant Llech, as it makes its way to join the River Tawe. The trail through the woods leads to one of South Wales' most spectacular waterfalls, Henrhyd. This 90-foot (27 m) cascade was used as the entrance to the Bat Cave in Christopher Nolan's 2012 blockbuster The Dark Knight Rises.
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Easy trail to explore on a day out
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There are over 70 waterfall hiking trails around Onllwyn, offering a wide range of options for different skill levels. This includes 23 easy routes, 44 moderate routes, and 5 more challenging trails.
Onllwyn is situated on the western edge of the Bannau Brycheiniog (Brecon Beacons) National Park, an area famously known as "Waterfall Country." The region is characterized by dramatic river valleys, ancient wooded gorges, and open moorland, providing a diverse backdrop for numerous stunning waterfalls. You can even walk behind some of the cascades, like the notable Sgwd Yr Eira.
The waterfall trails around Onllwyn are highly regarded by the komoot community, with an average rating of 4.5 stars from over 1800 reviews. Hikers frequently praise the stunning natural beauty, the unique experience of walking behind waterfalls, and the variety of routes available for all abilities.
Yes, there are 23 easy waterfall hikes around Onllwyn, many of which are suitable for beginners or families. These trails often feature well-maintained paths and offer accessible views of the waterfalls. For example, the Henrhyd Falls loop from Coelbren is an easy option to experience the tallest waterfall in southern Wales.
Many trails in the Brecon Beacons National Park, including those around Onllwyn, are dog-friendly. However, it's always best to keep dogs on a lead, especially near livestock, steep drops, or sensitive wildlife areas. Be mindful that some sections, particularly behind waterfalls, can be slippery.
Yes, many of the waterfall trails around Onllwyn are designed as circular routes, allowing you to start and end at the same point. An example is the Henrhyd Falls – Henrhyd Falls Bridge loop from Banwen, which takes you through scenic "Waterfall Country" and returns to your starting point.
The region is home to several spectacular waterfalls. Don't miss Henrhyd Falls, the tallest waterfall in southern Wales, where you can often walk behind the cascade. The famous Four Waterfalls Walk, though slightly further afield, includes highlights like Sgwd Yr Eira, Sgwd Uchaf Clun-Gwyn Waterfall, and Sgwd y Pannwr. You can also find panoramic views from spots like the Fan Gyhirych Summit Trig Point.
The duration of waterfall trails varies significantly depending on their length and difficulty. Easy routes, like the Henrhyd Falls loop from Coelbren, can be completed in under 2 hours. More extensive moderate trails, such as the Henrhyd Falls Bridge – Henrhyd Falls loop from Banwen, might take around 4.5 hours, while difficult routes can extend to 5-6 hours or more.
The waterfalls are particularly impressive after periods of rain, when the water flow is at its strongest. Spring and autumn offer lush scenery and comfortable hiking temperatures. Winter can be beautiful with potential ice formations, but trails may be slippery. Summer provides warmer weather, but water levels might be lower. Always check local weather conditions before you go.
Yes, the area around Onllwyn has a rich history. Some trails incorporate the region's industrial heritage by following former tramways. Additionally, the ancient Roman military road Sarn Helen, which once traversed Wales, passes through the community, allowing hikers to follow in ancient footsteps and discover remnants of Roman forts.
Given the often wet and potentially slippery conditions, especially near the waterfalls, waterproof hiking boots with good grip are essential. Layers of clothing are recommended to adapt to changing weather, and a waterproof jacket is advisable. Bringing water, snacks, and a map or GPS device is also wise.
While the region is known for its waterfalls, specific designated wild swimming spots directly at the base of the main cascades are not widely promoted due to safety concerns (strong currents, cold water, slippery rocks). Always exercise extreme caution and check local regulations if considering wild swimming in natural pools.


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