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Rhondda Cynon Taf
Hirwaun

Llwyn-on Reservoir Dam

Highlight • Structure

Llwyn-on Reservoir Dam

Hiking

5.0

(24)

Cycling

5.0

(8)

Mountain biking

5.0

(6)

This Highlight is in a protected area

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Bannau Brycheiniog National Park

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  • Location: Hirwaun, Rhondda Cynon Taf, South Wales, Wales, United Kingdom

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    Tips

    January 10, 2023

    Hiking

    Llwyn-on reservoir, built in 1926, covers 150 acres and is the largest of the three in the Taff Fawr Valleys area. Walking along the shore you can be immersed in the fresh smells of the conifer forest and lapping sounds of the deep blue water - an ideal habitat for otters, great crested grebes, goldeneye, goosander and coot.

    October 10, 2022

    Cycling

    Llwyn Onn reservoir offers views of conifer forest and the gentle lapping sounds of deep blue water.
    It is the largest of the three reservoirs in the Taff Fawr Valleys area.

    The fresh clean water provides an ideal habitat for otters, great crested grebes, goldeneye, goosander and coot.

    If you're after refreshments, head to the Garwnant Visitor Centre. on the North shore.

    March 4, 2024

    Hiking

    A very pretty and accessible dam, the spillover makes it a lovely scenic addition to your loop of the reservoir or the nearby forest. There are lovely picnic areas on the way around the dam, some eating spots by way of a roadside 'scoff' van in a nearby lay-by on the eastern shore, and the cafe at Garwnant Visitor Centre on the north side of the reservoir.
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    Nearby routes

    Best routes near Llwyn-on Reservoir Dam

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    4.4

    (38)

    312

    hikers

    #1.

    Llwyn-on Reservoir loop

    5.50km

    01:26

    40m

    40m

    Hike the Llwyn-on Reservoir loop for expansive views of deep blue waters, framed by the rolling hills of the Brecon Beacons. This easy 3.4-mile (5.5 km) route takes about 1 hour and 26 minutes to complete, with a gentle elevation gain of 129 feet (39 metres). You will pass through tranquil conifer plantations and mixed woodlands, enjoying the fresh smells of the forest and the lapping sounds of the water. Look for quaint footbridges and splendid views as you approach and walk over the dam. The trail features a mix of hard, compacted surfaces, as well as some looser, unpaved sections.

    Parking is available near the trailhead, making it easy to start your adventure. For additional amenities, the nearby Garwnant Visitor Centre offers more parking, refreshments, and a cafe, serving as a good alternative starting point. You might also find a cafe or a roadside service van with refreshments along the route itself. This accessible trail is suitable for all skill levels, ensuring a pleasant experience for everyone.

    The Llwyn-on Reservoir is the largest of three reservoirs in the Taff Fawr Valleys, built in 1926 following cholera outbreaks in Cardiff. Its clean waters provide a habitat for various birds, including great crested grebes, goldeneye ducks, and coots; keep an eye out for otters too, and use the available bird hides for observation. A section of the Taff Trail runs along the western side of the reservoir, offering connections to other routes, and you can also discover environmental sculptures on the Wern and Willow walks. Despite its local popularity, the area remains an under-visited gem, offering a peaceful hiking experience.

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    Easy
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    4.4

    (36)

    307

    hikers

    Embark on an easy hike around Llwyn-onn Reservoir, a 3.4-mile (5.4 km) loop that takes about 1 hour and 26 minutes to complete. You will gain a gentle 168 feet (51 metres) in elevation, making this a perfect relaxed outing. As you follow the path, you will enjoy expansive views of the reservoir's deep blue waters, framed by the rolling hills of Bannau Brycheiniog National Park. The route also leads you through tranquil mixed woodlands and a fresh conifer plantation. Keep an eye out for local wildlife, especially near the bird hide.

    Planning your visit is straightforward, as the trail is conveniently located near the A470, a main access route into the National Park. Parking is generally available for hikers. For additional facilities, the nearby Garwnant Visitor Centre offers amenities like toilets and a cafe. This makes it easy to prepare for your hike or relax afterwards.

    This route is considered a hidden gem, offering a peaceful experience away from more crowded areas in the Brecon Beacons. The varied scenery includes not only the reservoir itself but also opportunities to spot wildlife such as otters and various bird species. The presence of a bird hide further enhances your chances of observing the natural inhabitants of this serene landscape.

    Easy
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    Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

    Moderate

    Details

    Informations

    Elevation 250 m

    Weather

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    Tuesday 18 August

    19°C

    11°C

    53 %

    Additional weather tips

    Max wind speed: 22.0 km/h

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    Location: Hirwaun, Rhondda Cynon Taf, South Wales, Wales, United Kingdom

    Other Popular Places to Check Out

    Garwnant Visitor Centre

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