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Pontsarn Blue Pool

Wild Swimming Spot

Terrain:

Activities

Best Time To Visit

Woodland, Riverside, Cliffs

Swimming

Year round

Photo: Alan Bowring via Geograph.org.uk

Pontsarn Blue Pool, known in Welsh as Pwll Glas, is a large natural swimming hole on the Taf Fechan river in a wooded gorge north of Merthyr Tydfil, in the Brecon Beacons. The clear water deepens quickly and is mostly free of submerged rock, with cascades and channels running through it, and it lies...

10

Parking nearby

0

Food Spots nearby

2

Staycations nearby

Parking:

Food:

Staycations:

10 overnight parking

Flora's Cabin, Ein Trysor Cudd Cabin

FAQ's/Things to Know

Where is Pontsarn Blue Pool?
Wales contains this natural river pool hidden within a steep wooded gorge. Hikers usually walk down from a nearby historic viaduct to find the secluded spot.

What type of place is Pontsarn Blue Pool?
Pontsarn Blue Pool is a wild swimming spot in Merthyr Tydfil in South Wales.

When is the best time to visit Pontsarn Blue Pool?
Autumn mornings offer a wonderful atmosphere when changing copper leaves surround the deep basin. Crisp, dry days during this season provide the safest walking conditions before heavy winter rain raises the river levels dangerously.

What can you do at Pontsarn Blue Pool?
Swimming in the cold mountain water provides a brilliant thrill for outdoor enthusiasts. People also enjoy relaxing on the smooth limestone ledges while listening to the rushing sound of the upstream waterfall.

How long should I spend at Pontsarn Blue Pool?
Spending roughly an hour gives you plenty of time for a quick dip and some photography. A longer stay works well if you want to explore the surrounding valley and local castle ruins.

Where do I park at Pontsarn Blue Pool?
Spaces for ten vehicles are available nearby, providing ten overnight parking spots. Full details are available on the UK Hidden Gems app.

Where can I eat near Pontsarn Blue Pool?
There are no food spots recorded immediately near Pontsarn Blue Pool, check the UK Hidden Gems app for the nearest options.

Where can I stay near Pontsarn Blue Pool?
Flora's Cabin and Ein Trysor Cudd Cabin offer two places to stay in the immediate vicinity. Full details are available on the UK Hidden Gems app.

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Last Updated:

02 July 2026

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