The lake is overlooked by several prominent mountain peaks, especially Picws Du and Waun Lefrith. Waun Lefrith is formed from the sandstones and mudstones of the Brownstones Formation of the Old Red Sandstone laid down during the Devonian period. Its southern slopes are formed from the hard-wearing sandstones of the overlying Plateau Beds Formation which are of upper/late Devonian age.

Zoe Evans

July 17, 2022

Hiking

Heading towards the little trout farm you are flanked by gushing mountain streams and some great views of the distant peak of Pen Y Fan. You will reach Llyn Y Fan Fach in about half an hour - the walk is suitable for most people but if you want to ascend further to the top then allow about 5 hours and suitable clothing and footwear. It is here at the lake that as ancient legend has it a beautiful lady still lives!

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Routes here

Best routes to Old Trout Farm on the Afon Sawdde

4.8

(70)

647

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1. Llyn y Fan Fach – Llyn y Fan Fach loop from Llanddeusant

10.9km

03:30

480m

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

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Moderate

4.7

(28)

384

hikers

2. View of Picws Du – Fan Foel summit loop from Fforest Fawr

22.7km

07:27

1,040m

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

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Hard

4.7

(15)

217

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3. Llyn y Fan Fach – Afon Sawdde loop from Fforest Fawr

4.42km

01:28

230m

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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Easy

Details

Informations

Elevation 410 m

Weather

Today

Monday 9 March

11°C

6°C

43 %

Additional weather tips

Max wind speed: 17.0 km/h

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Take Me There

Location: Llanddeusant, Carmarthenshire, South Wales, Wales, United Kingdom

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Llyn y Fan Fawr

NCN Route 43: Ystalyfera Nature Reserve Section

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Afon Sawdde

Old Trout Farm on the Afon Sawdde

1. Llyn y Fan Fach – Llyn y Fan Fach loop from Llanddeusant

2. View of Picws Du – Fan Foel summit loop from Fforest Fawr

3. Llyn y Fan Fach – Afon Sawdde loop from Fforest Fawr

Other Popular Places to Check Out

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