Near Llanddeusant, Carmarthenshire, in the Black Mountain area of Bannau Brycheiniog (Brecon Beacons), Wales
Llyn y Fan Fach
Lake
Place photograph
8.7
Wildland
Half day
Time
Check
Cost
Dramatic
Feel
Why it's Wildland
8.7A glacial lake beneath the Black Mountain cliffs, with the Lady of the Lake in its folklore and a substantial mountain day beyond its shore.
The approach is straightforward, but the setting is anything but ordinary: a small lake beneath an imposing mountain backdrop. It works as a worthwhile out-and-back walk or the centrepiece of a demanding two-lake circuit, without needing a string of lesser stops to justify the journey.
Dramatic · Atmospheric · Wild
Find your way
Open mapNear Llanddeusant, Carmarthenshire, in the Black Mountain area of Bannau Brycheiniog (Brecon Beacons), Wales
Opening map…
Know this place a little better?
The experience
Follow the rising gravel track from the car park, watching the mountain backdrop draw closer before the lake appears around the final bend. Pause at the shore for the view and return the same way, or plan a separate, properly equipped mountain circuit linking Llyn y Fan Fach with Llyn y Fan Fawr.
Things to do
Walk the gravel approach to the lake
A 2.4-mile out-and-back walk from the usual car park. The track climbs steadily towards the mountains before levelling near the lake; straightforward footing does not make the ascent level or step-free.
Suggested allowance: 1.5–2 hours with a stop
Pause for the cliff-backed lake view
Make the shore the destination rather than rushing straight on to the ridge. The contrast between the water and the surrounding mountains is the main photographic subject.
Link the two lakes on a mountain circuit
The documented western circuit links Llyn y Fan Fach, the mountain ridge and Llyn y Fan Fawr over 14.8 km with 720 m ascent. Use full route information: this is substantially more demanding than the lake approach and is not signposted throughout.
Full day
Make a day of it
Quick escape · Allow roughly 1.5–2 hours; suggested allowance, not a measured route time
Quick escape — the lake and back
- 01
Start at Llyn y Fan Fach car park, having checked current access and mountain weather.
- 02
Follow the uphill gravel approach to the lake, approximately 1.2 miles each way.
- 03
Pause at the shore for the cliff-backed view, then return along the same track rather than committing to the ridge.
Half day · Allow 3–4 hours including stops; suggested leisurely visit
Half day — take your time below the cliffs
- 01
Walk the same 2.4-mile return approach at an unhurried pace, stopping to notice the small tarn and changing mountain views.
- 02
Spend time at the lake photographing the cliffs and water rather than treating it simply as a turnaround point.
- 03
Bring your own lunch and pause only where conditions are suitable, taking all litter away.
- 04
Return by the approach track. This is a slower lake visit, not a separate signed half-day circuit.
Full Wildland day · Full day; the sourced western circuit is 14.8 km with 720 m ascent
Full Wildland day — two lakes and the mountain ridge
- 01
Plan the western circuit from Llyn y Fan Fach car park using the full walking guide and a suitable offline map; start early with sufficient daylight.
- 02
Visit Llyn y Fan Fach, then continue on the documented circuit towards Bannau Sir Gaer and Fan Brycheiniog.
- 03
Reach Llyn y Fan Fawr as the second major lake stop before completing the documented return to the original car park.
- 04
Treat this as a mountain walk, not an extension to improvise at the shore: the guide reports unsignposted sections, rougher paths and occasional pathless ground.
- 05
Choose the short lake return instead if weather, visibility, fitness or available daylight make the circuit unsuitable.
Folklore & legend
Llyn y Fan Fach is associated with the Welsh legend of the Lady of the Lake. It belongs here as folklore, not documented history. The supplied material supports that connection but does not provide a sufficiently reliable account to retell the legend's detailed events.
Hidden details
The smaller tarn before the main lake — The walking guide notes a small tarn beside the rising approach, before the junction approximately 1.6 km from the start. It is an easy detail to overlook while watching the cliffs ahead.
The final bend — Near the end of the approach the track flattens and rounds a bend, with the lake roughly another 100 metres ahead. The arrival unfolds gradually rather than presenting the whole lake from the car park.
When to go
May · June · July · August · September · Early morning for parking and a generous daylight margin on longer walks; not a guarantee of solitude.
The imported record recommends late spring to early autumn for milder conditions. Clear weather is particularly important if the mountain views are the reason for coming.
Check the mountain forecast before setting out. Conditions can change rapidly. The full circuit includes rougher and sometimes pathless ground; carry navigation, suitable footwear, waterproofs, food and water. Do not treat descriptions of easy dry-ground terrain as an assurance in poor weather.
Worth pairing with
Llyn y Fan Fawr
The strongest sourced pairing is the second glacial lake on a planned mountain circuit. It makes a coherent full walking day, rather than a casual nearby detour. No swimming permission is established by the supplied material.
What to look for
- 01
The small tarn beside the approach
- 02
the way the cliffs grow more prominent as the track climbs
- 03
the final bend where the path levels just before the lake comes into view.
The story
Folklore & legend
Best time to go
May–September for generally milder walking conditions; choose clear weather for the mountain views.
May–September is the imported record's recommended window. Aim for an early start, particularly for a longer circuit: visitor reports mention a full car park by mid-morning. Clear, settled weather matters more than a particular month.
How long to spend
Half day
Perfect for
Walkers · Photographers
Practical information
Opening & access
Walking guides describe access from Llyn y Fan Fach car park along an uphill gravel track: approximately 2.4 miles return. The longer mountain circuits are separate, more demanding outings. Check current access conditions before visiting.
Check before visiting
Parking
A car park serves the usual approach near Llanddeusant. Visitor reports describe narrow approach lanes, a potholed final section and busy periods when parking fills. Check current parking arrangements before travelling.
Check before visiting
Toilets
The imported record reports no public toilets at the site. Check before visiting.
Check before visiting
Food & drink
The imported record reports no on-site café. Bring food and water; check before visiting.
Check before visiting
Dogs
Check before visiting
Check before visiting
Accessibility
Reaching the lake requires an uphill walk of approximately 1.2 miles each way. The main approach is described as gravel and well graded, but the imported record notes uneven ground and limited mobility access. Mountain extensions include rougher and sometimes indistinct paths.
Water
Lake
Gallery
Place photographsKeep exploring
Around Llyn y Fan Fach
Within 50 km · approximate straight-line distances
Source image8.5Llyn y Fan Fawr
Carmarthenshire Fans, western Bannau Brycheiniog National Park, Wales
2.9 km away
Heronstone Lodges Retreat
Ystrad Isaf Farm, Station Road, Ystradgynlais, Swansea SA9 1PJ
12.2 km away
Storey Arms Outdoor Education Centre
Libanus, near Brecon, Powys LD3 8NL
18.0 km away
Cwm Rhaeadr Forest
Cwm Rhaeadr Forest, near Llandovery, Carmarthenshire, Wales
20.8 km away