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Lady of the Lake Mountain Dog Walk Gallery

Local Walks & Reservoirs

South Wales Dog Friendly Walks - The Lady of the Lake

Lady of the Lake Mountain walk dog paddling in lake


Lady of the Lake Mountain Dog Walk off the Trecastle Mountain Road

This walk takes you through a landscape that at times hardly looks British. There are exceptional views from the ridge overlooking the glacial lake Llyn y Fan Fach in the Brecon Beacons National Park.


Lady of the Lake Mountain view of lake and mountains


Lady of the Lake Mountain Dog Walk off the Trecastle Mountain Road

According to legend, Rhiwallon, the farmer of Blaensawdde, met a beautiful water fairy beside the waters of Llyn y Fan Fach. She promised to become his wife on the condition that she would return to the water if he struck three causeless blows.

They married and raised three sons before Rhiwallon broke his pledge. Thereafter the lady of the lake vanished back to the water. The story does not end there, however. Many years later her sons succeeded in finding her and she reappeared to teach them herbal cures, enabling them to become the first in the long line of physicians from Myddfai, a tradition that lasted until the 18th century.


Lady of the Lake Mountains and Lake from above


Lady of the Lake Mountain Dog Walk off the Trecastle Mountain Road

Keep your eyes peeled for Red kites drawn by the feeding station in nearby Llandeusant; these birds nearly died out in the UK but have now been re-established.


Lady of the Lake Mountain Dog Walk mountain ridge


Lady of the Lake Mountain Dog Walk off the Trecastle Mountain Road

How to get there via Blaenau

By car
From Swansea take the M4 north and turn off on the A483 until it meets the A40. Carry on north along the A40, until you can go south along the A4069, and then turn off to the east, following signs for Llanddeusant. Alternatively you can follow smaller roads from Swansea: the A4067, then the A474 and then the A4069. From Llanddeusant take the road heading east towards Blaenau. The car park where this walk starts is just beyond the tiny hamlet of Blaenau, on the north side of the road.


Lady of the Lake Mountain Dog Walk Jack an Sheeba and Martin Gover on top of mountain


Lady of the Lake Mountain Dog Walk off the Trecastle Mountain Road
Getting there from Blaenau car park

1. Facing away from the car park (north), ascend a short zigzag path and traverse east towards the Sychnant, crossing one small tributary. Keep the Sychnant to the right (south-east) and ascend towards a path junction, which lies just below the col. (There are unmarked paths before the true junction.)

2. Follow the path south-east at first, then ascend across open ground to reach the foot of the north ridge of Fan Foel.

3. Ascend the steep final section of the ridge to reach a cairn. (An optional 1.5km detour leads to the summit of Fan Brycheiniog).

4. Bear right (south-west) from the cairn and follow a path that descends to Bwlch Blaen-Twrch.

5. Go uphill from the col to reach a small cairn on the summit of Picws Du.

6. Traverse west along the path that follows the northern escarpment of Bannau Sir Gaer to reach another small cairn on Waun Lefrith, which overlooks the western end of Llyn y Fan Fach.

7. The path bends north and descends to reach a path junction.

8. Bear right (east) at the path junction and descend to the dam at the outflow of the lake.

9. A track leads downhill towards the finish. It crosses one bridge before passing a fish farm on the left (west) and then crossing a second bridge, shortly before the car park.

10. Return to the car park.


Lady of the Lake Mountain Dog Walk to top of mountain


Lady of the Lake Mountain Dog Walk off the Trecastle Mountain Road
Getting there from Craig y Nos Castle


Go right out of the castle, take A4067 towards Brecon. After a few hundred yards, having passed the Welsh Show Caves, aka Dan Yr Ogof show caves, on your left, and the Gwynne Arms Pub which is off to your right, you will come to the Tafan Y Garreg Pub, currently painted a bright peachy pink colour.

Turn left after the Tafan y Garreg Pub car park on your left (car park is opposite the pub), heading up a single track lane. It winds through woods and eventually you come on to open mountainside, with a mountain valley stretching up ahead of you.

Soon after you cross the first cattle grid you will cross a small bridge over the stream. The stream is now on your left. Park first available space on the left. There are further spaces higher up, including a more 'main' looking space that will take 2 or 3 cars. Paths lead from here to the lake.

As the paths become virtually non-existent as you head across open mountainside, it is easy to miss the lake and never find the correct walk.

If you park first left after bridge, you can cross the river if it is low (stones are very slippery so a walking stick or two would be handy), then follow the stream going up the hill. You will pass loads of small waterfalls on this upward walk alongside the stream.

If you park higher up, you will still need to cross a stream or two but it is a bit easier. However the promising initial path does completely disappear. You head in the same direction as to where the path should be if it continued, until you come to the lake. It takes a good hour and you may feel as if you will never get there. It is only because I know it is there that I know to plough on and upwards!


Lady of the Lake Mountain Dog Walking on mountain ridge


Lady of the Lake Mountain Dog Walk off the Trecastle Mountain Road

The Black Mountain (Welsh: Y Mynydd Du) is a mountain range in Mid and West Wales, straddling the county boundary between Carmarthenshire and Powys and forming the westernmost range of the Brecon Beacons National Park. Its highest point is Fan Brycheiniog at 802 metres or 2,631 ft. The Black Mountain also forms a part of the recently created Fforest Fawr Geopark.


Lady of the Lake Mountain Dog Walk - view of the lake


Lady of the Lake Mountain Dog Walk off the Trecastle Mountain Road

The Black Mountain should not be confused with the Black Mountains in the east of the National Park, nor with a 703 metre (2,306 ft) summit in the Black Mountains that is confusingly also called Black Mountain.

In his description of a 'Blak Montayne', the antiquarian John Leland refers to a massif extending between Carmarthen and Monmouth i.e. what is now considered to be the Brecon Beacons in the wider modern sense of that term, thus also including the Black Mountains and the intervening high ground of Fforest Fawr.


Lady of the Lake Mountain Dog Walk waterfall stream


Lady of the Lake Mountain Dog Walk off the Trecastle Mountain Road

Llyn y Fan Fach (Welsh: 'lake of the small peak') is the smaller and more westerly of two natural lakes within the Black Mountain. It is enclosed within a rock hollow formed as a result of glacial action during the ice ages.

It is drained by the Afon Sawdde which cuts through a glacial moraine which in part forms a natural dam.

A small artificial dam was constructed in the 1930s to divert some of its waters to boost Llanelli's water supply.

Llyn y Fan Fach is associated with the Lady of the Lake legend.




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