Top 13 Waterfalls around Trawsfynydd
Best waterfalls around Trawsfynydd are situated within a region defined by its rugged Welsh landscape and ancient woodlands. This area, part of Snowdonia National Park, features a diverse natural environment where rivers carve through valleys and historical industrial heritage is evident. Trawsfynydd is known for its reservoir and surrounding uplands, providing a backdrop for numerous natural features. The region offers a combination of natural beauty and remnants of its past, including slate mining.
Best waterfalls around Trawsfynydd
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Last updated: May 6, 2026
Rhosydd Quarry — Ruins and Waterfall
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Rhaeadr Ddu (Black Falls) Waterfalls
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Coed Ganllwyd National Nature Reserve
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Waterfall in Coed Hafod-y-Llyn
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Pistyll Cain Waterfall
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Popular around Trawsfynydd
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A set of double falls, upper and lower. Both are quite tricky to photograph, the upper falls being the more precarious as you have to look over an edge to see the full drop. The lower falls are easier as you can get a low Point of View and hence get the flow of the water past you. These falls are only a few hundred yards up a well marked and obvious path, large car park on the main road at the bottom of the roadway.
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The long abandoned Barracks and Mill buildings of Rhosydd Quarry in the Moelwyn mountains of North Wales on a changeable day last September. A break in the heavy cloud allowed a burst of sunlight through that lit up the shiny slate rubble to make it look a bit like water. The dark buildings stood out against the lower slopes of Foel Ddu.
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The spartan barracks at Rhosydd, a hard place to live and work, not far from the summit of a mountain.
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The half-way point on the Minotaur mountain biking route at Coed y Brenin.
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I started the opposite way of the route, going to the summit of Y Garn the shortest way. It was better. Starting the long way around is too tidings even going down. Be prepared to get lost without Komoot and the path they show (it’s like a compass) because the paths are hardly visible in places. There is an old gold mine worth passing by. The views from Y Garn are well worth all the sweat.
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Slate was mined here above and below ground from about 1830. The remote location proved difficult, and a series of financial troubles hampered the quarry. It shut during WW1 and reopened afterwards until finally closing in 1948. At it's peak, this was the second-largest underground slate mine in North Wales. Today you can explore the spoil and some of the old machinery.
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Impressive, the many building ruins and the huge waste heaps
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This remote and ethereal ancient oak woodland was once part of a historic estate and slopes gently towards Llyn Mair (Mary's Lake). A network of trails offers spectacular views across Snowdonia National Park, while steam trains from the iconic Ffestiniog Railway wind along the border. With rare wildlife and an abundance of beautiful flora, Coed Hafod y Llyn is the perfect forest destination for train enthusiasts and nature lovers. (Woodland Trust)
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Frequently Asked Questions
Are there easy or family-friendly waterfall walks around Trawsfynydd?
Yes, for a family-friendly option, the Waterfall in Coed Hafod-y-Llyn offers a network of trails through ancient oak woodland. Additionally, Rhaeadr Ddu (Black Falls) can be reached via a short walk from Ganllwyd through the Coed Ganllwyd National Nature Reserve, though caution is advised on slippery rocks near the falls.
What historical sites can I explore near the waterfalls in Trawsfynydd?
The Rhosydd Quarry — Ruins and Waterfall is a significant historical site. It showcases the area's slate mining heritage with remnants of barracks, workhouses, and old machinery from the 19th and 20th centuries. It was once the second-largest underground slate mine in North Wales.
Can I go wild swimming near the waterfalls in Trawsfynydd?
At Pistyll Cain Waterfall, it is possible to swim in the river beneath the waterfall. This natural monument features a 20-meter plunge into a large splash pool, making it a refreshing spot.
What is the best time to visit the waterfalls around Trawsfynydd?
The waterfalls, such as Rhaeadr Ddu (Black Falls) Waterfalls, change character with the seasons. While beautiful year-round, visiting after rainfall often enhances their flow and power. Spring and autumn offer vibrant foliage, while summer provides warmer weather for exploring. Always be mindful of potentially slippery conditions, especially in wet weather.
Are there any natural reserves or unique ecosystems near the waterfalls?
Yes, Coed Ganllwyd National Nature Reserve, which encompasses Rhaeadr Ddu (Black Falls) Waterfalls, is a peaceful ancient woodland. Its wet climate makes it one of the richest sites for mosses and liverworts in north-west Europe. It's also an important oak woodland and a Site of Special Scientific Interest.
What outdoor activities can I combine with a waterfall visit in Trawsfynydd?
The Trawsfynydd area offers various outdoor activities. You can find numerous cycling routes, including those around Coed y Brenin, and hiking trails that explore the Rhinogau Mountains. For more details on routes, check the Cycling around Trawsfynydd, Hiking around Trawsfynydd, and Gravel biking around Trawsfynydd guides.
What should I wear for a waterfall walk in Trawsfynydd?
Given the rugged Welsh landscape and potentially wet conditions, especially near waterfalls, it's advisable to wear waterproof and sturdy footwear with good grip. Layers of clothing are also recommended to adapt to changing weather, and a waterproof jacket is always a good idea.
Are there any waterfalls that offer scenic viewpoints?
Many waterfalls in the region offer scenic views. For instance, the Waterfall in Coed Hafod-y-Llyn provides spectacular views across Snowdonia National Park. Pistyll Cain Waterfall also serves as a great viewpoint, especially from just below Pont Gwyn-fynydd.
Are there any hidden waterfalls near Trawsfynydd that are less known?
While the main waterfalls are well-documented, the region's diverse natural environment means many smaller, unnamed cascades can be discovered along rivers and streams, particularly within the ancient woodlands and gorges like those found in Coed Ganllwyd National Nature Reserve. Exploring hiking trails can lead to these less-frequented spots.
What kind of wildlife can I expect to see near the waterfalls?
The ancient woodlands surrounding waterfalls, such as Coed Hafod-y-Llyn and Coed Ganllwyd National Nature Reserve, are rich in wildlife. You might spot woodland birds like redstart, pied flycatcher, osprey, goshawk, and wood warbler. Mammals such as foxes, badgers, horseshoe bats, and the elusive pine marten also inhabit these areas.
Are there any waterfalls near National Cycle Routes?
Yes, Pistyll Cain Waterfall is conveniently located just below Pont Gwyn-fynydd and National Cycle Route 82 in Coed-y-Brenin forest, making it an ideal stop for cyclists.
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