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Name:Foel Cwm-Sian Llwyd [Foel Cwm Sian Llwyd]
Hill number:2109
Height:648m / 2126ft
Parent (Ma):19413  Foel Cedig
RHB Section:30E: Bala to Welshpool
Nuttall/Wainwright area:The Berwyns
County/UA:Gwynedd
Catchment:Dee (Flint)
Class:Simm, Hewitt, Nuttall, Buxton & Lewis, Bridge
(Tu,Sim,Hew,N,BL,Bg)
Grid ref:SH 99588 31387
Summit feature:trig point
Drop:58m
Col:590m  SH990298  
OS map sheet(s):(1:50k) 125
(1:25k) 255
Survey:Abney level
Change log:show changes for this hill entry
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 364 users, only the latest 50 shown - Show all)ByDate of Ascent
Linear walk with Jonny on a very wet Tuesday. Returning to the area to reclaim all the welsh Hewitts. (Foel Cedig reclassified).zaul_uk02/01/2024
The walk from Y Groes Fagl to this summit and then return to Y Groes Fagl is one of the hardest slogs I've done. very few sheep trods to follow, often boggy and very uneven requiring a lot of concentration and determination.simocity15/10/2023
From good parking on the B road to the east. A bit of a vegetable bash but good views from the summit trig. An hour return.Alan Caine17/06/2023
Walk 7.4KatyT11/05/2023
Combined Nuttall walks 7.3 and 7.4: Parked at Milltir Garreg walked down the road 200 yards and picked up footpath most of the way, then final trudge through heather to summit. Retraced footsteps, the up the road to bag Post Gwyn. Followed boardwalks and hard to find quad bike track to Bryn Gwyn then heather slog to summit of Post Gym. Unseasonably warm November day. Finished just before dark.Lazylizzie13/11/2022
From B4391andrew.morel11/09/2022
As per Nuttall walk 7.4-ish. With R on route to BarmouthDan Baddeley26/08/2022
From A4391Gwastadros09/07/2022
Climbed with Jason www.exploringmidwales.co.ukRob Rees28/04/2022
From site of ruined cottage on road to NE.Mark Jackson29/10/2021
https://www.strava.com/activities/6146021730/overviewrhif721/10/2021
Three separate walks in one day: Foel Cwm-Sian LLwyd; Post Gwn; and Glan-hafon. Separate reports for each summit. For Foel Cwm-Sian LLwyd started from parking area north of hairpin initially heading out on track and then very early west to stram and followed stream up missing worst of the heath and the sheep do seem to like following it also which helped. By no means free of heather problems but not too serious, quite a comfortable line all the way to summit even at this time of year when heather etc is at its worst.dickscroop29/09/2021
From B4391 - Knee deep heather, no sheep teails, extremely tough goingChris Williams10/07/2021
A lot of heather! M Gmaryjdavies16/06/2021
CK SheilaS12/04/2021
From Milltir Gerrig. A hard slog over heather and bog mostly, handrailing fences.AndrewP10/12/2020
TD & CThis Dog18/09/2020
As others, from the parking area to the east. Pleased I'm not the only one who didn't find any paths.PGCE20/08/2020
Walked across from the Llangynog-Bala road. Camped below summit. Few paths, heather, bilberry and grass, bog and marsh. Wild and quiet.Taz3813/06/2019
park 0061 3212 no paths used grouse cuts where couldunderhill26/05/2019
From the B4391 Llangynog to Bala road at SJ00584 32117Westdenewalker05/05/2019
12:30 from obvious parking spot after sleeping in the car for an hour waiting for nasty rain to stop. Tough heather hack with nasty sun in my eyes. 50 mins.Wycombe Wanderer26/11/2018
Came here to see if we could get above the mist. No joy though! Deep heather and wet snow. The dog did well! Not the best of walks.jenx23/11/2018
Parkingboff main road to East, our last Nuttall at thiscendvofvthe Cedig range. Mist then snow all way to top. Used heather cut lines to aid way to summit which was tho still hard work in knee deep choss. With Jenx and Bryhernordicstar23/11/2018
After Post Gwyn this morning tackled Foel Cwm Sian Llwyd after lunch.knarf19/10/2018
From just above hairpin. Hard slog through heather at this time of the year.Eddie21/08/2018
Solo. Parked a few hundred yards from hairpin bend to north of Milltir Gerrig on B4391, walked through the heather, very hor day, swarms of aggressive flies.Dewi Prysor06/08/2018
https://www.strava.com/activities/4464371188Sleepwa1ker13/05/2018
1/9 (Foel Cwm(Sian Llwyn)/Foel y Geifir/Trum y Gwragedd(Trum y Gwredd)/Foel Goch/Mynydd Nodol/Boncyn Foel Bacg/Cefn Ddu/Llysy Frenhwes/Foel Gasnach)Fergalh20/08/2017
This is an awful walk no paths with lots oh heather and boggy in placesDarren-44313/08/2017
Squelch squelch squelch. Bogsville. This, I would say, is an extremely hard walk. Well not for me, but definitely for you.tumpawumpa11/04/2017
One last top on the way home after a successful few days of hill bagging in the Berwyns. This one's only a couple of hours, but lots of heather. Started on the B4391 at GR00632, followed the watercourse up to the summit, across to the ruined building and then straight down through the heather. Good views on top.tsharp24/03/2017
a tough slog from the road through rough heather and gorse. we could not find the any path. the summit is well hidden from the road view. a simple up and down.Aristotle Chip08/01/2017
Solo walk during a weekend trip to Llangollen for a friend's Birthday. Aber Hirnant - Foel Cwm-Sian Llwyd - along ridge via all Nuttalls to Pen y Cerrig Duon - road - Foel y Geifr - north along ridge - steep descent by forest to road - road back to Aber Hirnant. A rather dull and heathery set of hills!AGWilliamson18/12/2016
Climbed with Chris from Llangynog. Continued to Y Groes Fagl.dhbond16/07/2016
Loosely followed the route outlined in the Nuttall book. No real paths, just yomp through heather but worth it for the views.Ramblingpaul31/05/2016
Nuttall route.crax7330/05/2016
Solo. From the road and back to it when i had some time to kill after an early finish elsewhere. I found a vague path between the cairn/shelter and trig point but that was about it.Aimless Rambler29/05/2016
Nuttall Walk WN 7.4 Foel Cwm Sian Llwyd from the B4391 (006321). 2.8km with 180m ascent in 1 hour. (S)silveracorn_alan12/05/2016
KeithByTheC05/09/2015
Nuttall walk 7.4: Foel Cwm-Sian Llwydronaldo33329/05/2015
From road, quick ascent great viewemily24/05/2015
Hard work considering the top is so close to the road.PeteEdwards26/04/2015
From donut layby at 007 321. Heather trudge but made easier by recent cutting back and hot day so no bogs.dicky07/09/2014
+ SharpySimonK28/06/2014
With G. Nuttalls' route from B4391.RT197025/04/2014
On own from B4391 at 006,321. Dank day, clag down so a really horribly wet heather bash to the trig point and back. Took one hour in total.Crib Goch22/04/2014
Straight up and down from the road through the heather with Richie.Herbert Anchovy24/11/2013
With GilesRichard Lawrenc24/11/2013
BAD FORECAST SO WENT UP THIS ONE EARLY FROM BALA CAMPSITE. STRUGGLED UP THROUGH LONG HEATHER WITH JOYCE. MIST CAME DOWN AS WE DESCENDED BUT WENT ON TO DO POST GWYN FROM THE TOP OF THE PASS.BURGESS04/08/2013