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Name:Garreg Las [Twyn-Swnd]
Hill number:2255
Height:635m / 2083ft
Parent (Ma):5603  Fan Brycheiniog - Twr y Fan Foel
RHB Section:32A: Llandovery to Monmouth
Nuttall/Wainwright area:Brecon Beacons
County/UA:Carmarthenshire [Sir Gaerfyrddin]
Catchment:Catchment Boundaries, Tawe, Towy
Watershed:Swansea Bay, Carmarthen Bay
Class:Simm, Hewitt, Nuttall, Subhump, Buxton & Lewis,
Grid ref:SN 77747 20331
Summit feature:northerly of two huge ancient cairns
Col:541m  SN786213  
OS map sheet(s):(1:50k) 160
(1:25k) OL12W
Observations:25m ESE of ancient cairn ground is higher than visible base of cairn; S cairn is at SN 77735 20289 and is 40m from N cairn
Survey:Abney level
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GPS data:show GPS entries for this hill

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N.B. Some hill summits are on private property or on land where there is no public right of way.  Permission should be sought from the landowner where access to a hill summit is through private land.
Please report via the contact page any logs you see below which describe or encourage acts of trespass.  Please quote the hill number and hill name.

Logged Descriptions  (logged by 433 users, only the latest 50 shown - Show all)ByDate of Ascent
From Picws Du, way quieter than the other hills earlier in the day. Back to Callwen church via a traversing route taking in the crashed Canadian aircraft on Carpet Goch.Grinner22/06/2024
Parked in the quarries car park at the top of the pass to the NW. Garreg Lwyd (trig & cairn), Foel Fraith, Garreg Las and return by the same route. Dry and sunny, although frozen and frosty underfoot with a chilly wind. Only met two soldiers on a training hike. An excellent half day walk before the long drive home. Solo.richard6902/12/2023
Revisit. On route to Carreg Yr Ogof. Visited cairns and high ground ESE.PGCE08/11/2023
DOP at Mountain Road Car Park (SN 732187 - 4km North of SA18 1AN (Upper Brynamman), Route total 13.5km completed in 2 hrs 37 mins. Cloud layer 550-700m. Periods of low vis <50m. Route included scrambling for a short section up to Carreg-Las. Dry. Winds gusting to 45mph.ChrisMc016423/10/2023
First I climbed Garreg Lwyd (616m) and trigpoint, the onto Foel Fraith (602m). From there I took a detour to Carn Fadog (512m). Then onto the highest and most outlying summit for today, Garreg Las (635m) and then onto the trigpoint and summit which lies beyond, Carreg Yr Ogof, a beautiful spot. Time was getting on but I managed to include Cefn y Cylchau (556m) on the way back and a fairly direct route back to Herberts Quarry allowed me to finish in daylight. A very scenic walk in this remote area. /Dmeltdiceburg23/10/2023
With JamesThis Dog06/04/2023
A4069 summit parking area - Garreg Lwyd - Foel Fraith - Garreg Las - Cefn y Cylchau - Carn Pen-rhiw-ddu - car.Mark Jackson29/10/2022
22.5 mile 3794ft walk, start at Dan Yr Ogof Show Caves Camp Site, follow track NW from campsite upto Twynwalter,Carreg Yr Ogof TP, Garrag Las, Cefn Ycyichau,Garreg Lwyd,Foel Fraith and Tyle Garw, return East accross moor to rejoin path back to Dan Yr Ogof.stephenbuda18/04/2022
From Llanddeusant (no parking at Gellygron). Just beat the mist.Wycombe Wanderer11/01/2022
RMC SheilaS10/10/2021
Garreg Lwyd, Foel Fraith and Garreg Las. A selection of small car parks NW of Garreg Lwyd, any of which will do. A path all the way up Garreg Lwyd and over the succeeding tops. Cut the corner on approach to Garreg Las but nothing gained as ground somewhat more awkward. Set out to return by Beacon Way but it either disappears or I lost it so finished up contouring Foel Fraith and re-ascending Garreg Las but all easy going with sheep trods etc. A very pleasant uncomplicated walk.dickscroop06/10/2021
Part of a two day trip across the Black Mountain. Parked in lay-by on minor road to the east of Fan Brycheiniog. Walked along the ridge then dropped down to Afon Twrch to camp. Day two walked up to Garret Las and followed the Beacons way back to car.LaurieIson2114/08/2021
Parked on A4069 followed Beacons way at various points up to summit and on to Mynydd Du, picked a path back on South faces of Foel Faith and Garreg Lwydandrew.morel10/08/2021
As part of Beacons Way UltraJim T25/07/2021
G MyIdris16/07/2021
Walk in the Black Mountain range, paths not as clear as other parts of the Brecons, but that gives a bit more adventure! Mountain pass car park had plenty of spaces, and a good place to start a walk.JazDisney26/06/2021
Gyda Rhiannon, Catrin, Mikey, Dewi a Gwen. Via Carreg Lwyd a Moel Fraith.sionbrit25/04/2021
From Mountain Road Viewpoint up and over Garreg Lwyd (Moel Gornach), Foel Fraith and then out and back to Garreg Las (Twyn-Swnd)with return via Beacons Way.Arbie03/04/2021
From the quarry on the A4069 via Foel Fraith. Superb limestone scenery along the wide south ridge. Fox at the huge cairn at the summit. With Jemma.Campbell Singer13/09/2020
Great views.Fox at the top. With dad.Jemma Singer13/09/2020
From CP on pass to west. Garreg Lwyd, Foel Fraith, Garreg Las, Waun Lefrith. Back via Cefn y Cylchau. With B and R.jenx12/09/2020
From the car park at the summit of the A4069, visiting Garreg Lwyd enroute to Foel Fraith, then on to Garreg Las. Then returning around the top of the steep slope above Blaen y Cylchau, before heading north to Cefn y Cylchau. The return to the A4069 roughly followed the Beacons Way. Then a quick up and down Carn-Pen-rhiw-ddu from the car park. 16.6km with 560m ascent in just over 4 hours. (S)silveracorn_alan22/07/2020
From the ridge line over by Waun Lafrith trimarc2 and I looked at the Nuttal book and thought “the weather is still nice how hard can it be to nip to that one extra then follow their route back?” Ah how naive we were. A very soggy four hours later, 7 river crossings and a rather more exciting spot of 4 wild ponies yes we’d bagged this blasted Nuttal but we were also soaked to the bone. I have the soggy cocktail sausages and flask of cup a soup that I devoured on the summit to thank for my survival.Fionalevey19/12/2019
The Nuttall book is right to warn about river crossings on the way back to the pub car park at the Tafarn-y-Garreg. But the pub is welcoming, the fire warm and very welcome food was served at 4.15pm. A very memorable day finished by being very wet.trimarc219/12/2019
From A 4067 by the Gwyn Arms SN 84637 16603, Via Fan Hir, Fan Brycheiniog, Picws Du, and Waun Lefrith.Westdenewalker22/07/2019
Walked from car park on A4069. Out and back loosely following the Beacons Way to summit Garreg Lwyd, Foel Fraith, Garreg Las, Waun Lefrith, Bannau Sir Gaer, Fan Foel, Fan Brycheiniog, Fan Hir. High temperatures, clear skies and terrific views made for a very enjoyable day out.muzza205/07/2019
walk up from the car park at GF SN 82144 22341 with roger and the dog also picked up Foel Fraith and Garreg Las long walk out to the finish point at Glyntawemy-list29/06/2019
walk up from the car park at GF SN 82144 22341 with roger and the dog also picked up Foel Fraith and Garreg Las long walk out to the finish point at GlyntaweDarren-44329/06/2019
Ascent from the A4069 of Garreg Lwyd (616m), to Foel Fraith (602m), Garreg Las (635m), Carreg Yr Ogof (585m) where explored the cave before heading to Waun Lefrith (677m) and return by similar route and this climbing all but Carreg Yr Ogof twice. Beautiful sunny day, slight breeze. Distance ~20Km, ascent ~770m.VirtualMountain22/06/2019
Rhiw Wen > Blaen y Cylchau > Garreg Las > Foel Fraith > Garreg Lwyd > Rhiw Wen. Overcast.Winterfloodian06/05/2019
With Jonny and Smivvy.zaul_uk09/02/2019
Very Poor weather and slow going over ice, rocks and snow. Snowing at this timeBannor29/01/2019
Long circular route from Llanddeusant YHAdc9615/09/2018
Reached whilst walking the Beacons way, on day 7 from Llanddeusant also went onto Garreg Lwyd.WAYNE ROWLETT10/09/2018
With: hb; Walked over to here after wildcamp below Twynwalter then back over Black Mountains. Lovely old cairns on summit.Ian Baines25/08/2018
With: ib; Helen Baines25/08/2018
Walked with Katarzyna, from mountain car park at Herbert's quarry. We went over Garreg lwyd and Foel Fraith and returned via Beacons way, the path though was non existent.SteveClay04/08/2018
With Penda. From Dan Yr Ogof campsite, to Fan Hir and then on to Fan Bryncheniog, Picws Du, Waun Lefrith, Garreg Las and back across the moorland. Nuttall walk 13.5 in its entirety. A long, hot flog with temperatures in high 20 Celsius. Took lots of water and we needed it all. Wonderful views but a wearying flog back from the last hill.beorwulf26/06/2018
Backpacking roundbenwloudon26/05/2018
SWT recce and b’day cake run with Paulinemilejunkie20/05/2018
on circuit from Tafarn-y-Garreg in Swansea valley, via Black Mountain topsrichardrosser05/05/2018
Crossing of the Carmathen Fan from A4069 to Glyntawe, while supervising the Explorers on the first day of their Queen's Scout Award qualifying expedition. Visited Garreg Lwyd, Foel Fraith, Garreg Las, Waun Lefrith, Picws Du, Fan Brycheiniog and Fan Hir. 23km with 1070m ascent 8h20m.silveracorn_alan12/04/2018
Continuation from Foel Fraith - weather still clear but with a strong cold windDanMaisieBex04/02/2018
Used car park near summit of A4069. Climbed SE to summit of Garreg Lwyd with 2 trigs (one demolished) and huge cairn. Continued to Foel Fraith, col then along fine ridge with extensive slabs to Garreg Las and its two huge cairns. Returned to col and then traverse to flat summit of Cefn y Cylchau. Descent WSW back to road then ascent by quarry to Carn Pen-rhiw-ddu and back to car. Light covering of snow on the high tops, excellent views.RobertP26/11/2017
from llanduesant up to the lake then compass bearing off to Garreg las. we did a cicular route back via the beacons wayAristotle Chip13/08/2017
final summit and a long walk back to the car solocolinfielding25/05/2017
Beacons Way.jim.r03/05/2017
From Quarries Walk Car Park on A4069 Mountain Road (SN 73253 18741) - Garreg Lwyd [Moel Gornach] - Foel Fraith - Garreg Las [Twyn-Swnd]. Out and back via Beacons Way (vague path in places).david23020123/04/2017