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. It is those rocks which form vertical crags along the top edge of the scarp. The northern face of Waun Lefrith was home to a glacier during the ice ages which gouged out the cwm in which Llyn y Fan Fach now sits. This empties via the Afon Sawdde into the River Towy

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Elevation 710 m

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Today

Wednesday 17 December

11°C

2°C

98 %

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Max wind speed: 30.0 km/h

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

Other Popular Places to Check Out

Picws Du Summit & View of Llyn y Fan Fach

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Bwlch Cerrig Duon Pass

Old Trout Farm on the Afon Sawdde

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Henrhyd Falls Bridge

View of Llyn y Fan Fach

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

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

3. View of Picws Du – Llyn y Fan Fach loop from Llanddeusant

Other Popular Places to Check Out

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