Lakes around Cwmamman are situated within the Amman Valley, an area known for its industrial heritage and natural landscapes. While Cwmamman itself does not feature large natural lakes, the wider region offers unique hydrological features like Pant-y-llyn, Great Britain's only known turlough, which fills seasonally with groundwater. The area provides opportunities for exploring diverse habitats, including ancient woodlands and species-rich grasslands, making it suitable for walking trails and nature observation.
Last updated: May 18, 2026
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Nice gravel track down to the reservoir with lovely views. Track down can get muddy but good fun. Do-able on a gravel bike
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The trail around the woodland passes an old ice-house and wooden sculptures and carvings hidden amongst the trees. As you leave the woods you reach the pond.
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Easy walking along the Eastern and Southern edges of the reservoir, courtesy of the Gower Way (a 35-mile path linking Penller Castell to Rhossili if you fancy stretching your legs a little further). Fantastic views.
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At the heart of the Country Park is a lake, surrounded by a peat bog. Elsewhere are areas of heathland and broadleaved woodland. Facilities include a visitor centre, cafe and Mountain Bike and Tarmac / good quality bike trails.
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Cyclists need to be aware of vehicles and walkers using the road between the Lower and Upper reservoir.
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The lower reservoir is not suitable to go around. There are steep steps at one end.
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It’s easy off-road ride, the lake and woodland is very interesting. New cafe opening sometime 2021
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Near Cwmamman, you can discover Pant-y-llyn, Great Britain's only known turlough. This ephemeral lake fills with groundwater during autumn and winter, then completely disappears by summer, offering a rare hydrological phenomenon. It's part of the Carmel National Nature Reserve, which also features diverse habitats like ancient woodland and species-rich grassland.
Yes, Llyn Llech Owain Country Park is an excellent family-friendly option. It features a lake surrounded by a peat bog, along with a visitor centre, cafe, and bike trails. The Pond at Dinefwr Park also offers family-friendly trails with wooden sculptures and carvings.
For easy walking, the Upper Lliw Reservoir offers accessible paths along its eastern and southern edges, providing extensive views. Similarly, Lower Lliw Reservoir has an accessible path to its south, leading towards the Upper Reservoir.
The seasonal nature of Pant-y-llyn creates a diverse habitat, serving as a breeding ground for frogs, toads, and newts when it's full. The surrounding Carmel National Nature Reserve supports various bird species, dormice, and bats. At Lower Lliw Reservoir, you might spot birds like Peregrine, Kestrel, Raven, Wheatear, Meadow Pipit, Skylark, Whinchat, Red Kite, and Curlew.
Yes, Llyn Llech Owain Country Park has a visitor centre and a cafe. There is also a cafe located in the car park at Upper Lliw Reservoir, though it's important to note it may only accept cash.
To witness Pant-y-llyn as a lake, the best time to visit is during the autumn and winter months when it fills with groundwater. It completely disappears by summer, so visiting outside of these seasons will offer a different, but still interesting, geological perspective of the turlough depression.
The area around Pant-y-llyn holds historical interest, with ancient skeletons found in nearby caves and a Bronze Age flat axe discovered, indicating millennia of human presence. While not directly a lake, the Pond at Dinefwr Park is part of a wider estate with historical significance, including an old ice-house.
Yes, at Upper Lliw Reservoir, you can cycle or portage your bike around the reservoir, through the forest, and onto the Rhyd y Pandy Road if you have a mountain or gravel bike. Llyn Llech Owain Country Park also offers dedicated Mountain Bike and tarmac/good quality bike trails.
Beyond exploring the lakes themselves, the region offers various outdoor activities. You can find numerous running trails, such as loops from Gwaun-Cae-Gurwen or Pontaman, which you can explore through the Running Trails around Cwmamman guide. For cyclists, there are road cycling routes, including longer rides from Brynaman to Usk Reservoir, detailed in the Road Cycling Routes around Cwmamman guide. Easy hikes are also available, like the Carreg Cennen Castle loop, found in the Easy hikes around Cwmamman guide.
Both Upper Lliw Reservoir and Lower Lliw Reservoir are noted for their extensive views. Upper Lliw offers fantastic views across the landscape, while Lower Lliw is set amongst the stunning mountain scenery of the Mawr, providing picturesque vistas.
The Carmel National Nature Reserve is significant for being home to Pant-y-llyn, Great Britain's only known turlough. Beyond this unique geological feature, the reserve boasts a rich mosaic of habitats, including ancient woodland, species-rich grassland, and disused quarries, supporting a wide variety of flora and fauna.


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