Name:Clogwyn Llech Lefn [Bwlch y Tri Marchog Top]
Hill number:3684
Height:637m / 2090ft
Parent (Ma):1965  Carnedd Llewelyn
SMC/RHB Section:30B: Snowdonia
Nuttall/Wainwright area:The Carneddau
Topographical area:WN04 Llewelyn-elen
Grid ref:SH 70901 62745
Summit feature:most easterly large rock
Col:623m  SH 70755 62697  
OS map sheet(s):(1:50k) 115
(1:25k) OL17E
Observations:drop measured as 14.0m
Survey:Leica NA730
Surveying Clogwyn Llech Lefn (Final).doc
Comments:Insufficient drop for Nuttall (surveyed)
GPS data:show GPS entries for this hill


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Logged Descriptions  (logged by 190 users, only the latest 50 shown - Show all)ByDate of Ascent
South Eastern Carneddau Nuttalls.simocity09/06/2024
From parking at Llyn Eigiau Reservoir. Tracks to Cedryn, then faint path and fence line to Bwlch y Tri Marchog and summit. A rarely visited summit judging by the lack of wearmarks. Returned via Craig Ffynnon.PGCE26/01/2024
Pen Llithrig y Wrach & Clogwyn Llech Lefn with Rufus. Parked in the national park car park behind Joe Brown's in Capel Curig and followed A5 N to ROW leading to south ridge of Pen Llithrig y Wrach. Descending from summit WNW to Bwlch y Tri Marchod and the slight top of Clogwyn Llech Lefn. Followed fence line S from bwlch to pick up original path back to road. Cloud inversion to E & S with lovely views over Tryfan & the high Carneddau. I had PyLW mistakenly logged for 11 years at the time thinking I had done it as part of the southern carneddau circuit, I have finally figured out the logging mistake and ascended this lovely mountain.jacobrichmond21/02/2023
From Cwm Eigiau. Craig Eigiau, Foel Grach, Carnedd Llewellyn, Pen Yr Helgi Du, Clogwyn Llech Lefn and Pen Llithrig Y Wrach.alunrees4005/02/2023
Pen Yr Ole Wen, Carnedd Daffyd, Yr Elen, Carnedd Llewellyn, Pen Yr Helgi Du, Clogwyn Llech Lefn, Pen Llithrig Y WrachBarns15002/06/2022
2/4 (Pen Llithrig Y Wrach/Cloghwyn Llech Lewfn/ Pen yr Helgi Du/Craig Ffynnon)Fergalh25/10/2021
Cwm Eigiau horseshoe, with Jon Collingwood.BobHancock01/09/2021
Craig Eigiau, Foel Grach, Carnedd Llewelyn, Pen Yr Helgi Du, Clogwyn Llech Lefn, Pen Yr Llithrig Y Wrach, Craig Ffynon and Moel Eilio. From Cwm Eigiauangelfon3718/10/2020
See Kamoot entry for full details/gpx download:
From Llyn Ogwen, then up the reservoir road to the summit of Pen y Helgi Du and afterwards Pen Llithrig y Wrachderrymark30/11/2019
From Trasbwll parking area with Hiking Manchester: Craig Eigiau, Foel Grach, Carnedd Llewelyn, Yr Elen, back to Carnedd Llwelyn, Pen Yr Helgu Du, Clogwyn Llech Lefn (Bwlch y Tri Marchog Top), Pen Llithrig y Wrach. Thick cloud for most of the day which cleared around 4pm to reveal beautiful views.Lazylizzie06/07/2019
With Keith. Part of Carnedd Llewelyn loop.Aimless Rambler17/02/2019
From the campsite at Gwern Gof Isaf on a round of Pen yr Helgi Du, Clogwyn Llech Lefn and Pen Llithrig y Wrach. 8.2 miles in 4 hours.Alan Caine29/09/2018
Waen Bryn-gwenith, Craig Eigiau, Foel Grach, Carnedd Llewelyn, Pen yr Helgi Du, Clogwyn Llech Lefnkeithouk16/09/2018
Craig Eigiau, Foel Grach, Carnedd Llewelyn, Yr Elen, Pen Yr Helgi Du, Pen Llithrig y Wrach circular route, starting at Llyn Eigiau car park.noxibis15/09/2018
park behind joe browns on 3 day back pack of carneddau on to pen helgi duunderhill12/05/2018
Climbed with Peter Thirkettlepsburgess14/11/2017
Climbed with Paul BurgessP.Thirkettle14/11/2017
From Ogwen Valley. Pen Yr Ole Wen, Carnedd Dafydd, Carnedd Llewelyn, Pen Yr Heigli Du, Colgwyn Lech Llefn and Pen Llithrig Y Wrach. Glorious Day!!Alunrees3308/05/2017
Parked at Llyn Eigiau, climbed Ampitheatre Buttress, then up Pen yr Helgi Du, Pen Llihrig y Gwrach, Craig Ffynnon and back to car. Perfect sunshine made a brill day, with Mart.John Eley07/05/2017
637mThe Grouse05/05/2017
Climbed in passing between Pen yr Helgi Du and Pen Llithrig y Wrach just in case.mart079708/04/2017
From Caseg Fraith, up Y Braich to Pen yr Helgi Du, descent to Bwlch y Tri Marchog, up to Pen Llithrig y Wrach and down to aqueduct back to Caseg Fraith. Windy day but clear. (With MM, MS, OA, CB)robertgn24/09/2016
With RobN, MaddyM, LivA & CathyB. From Caseg Fraith Hut.masmith24/09/2016
On my own, from Caseg Fraith via Pen Yr Helgi Du. Sunny.alwaysinshorts22/04/2016
With Jenx. Parked carefully at access to water board road gate near Helyg and used bridleway then water leat to gain access to upper cym leading to bealach west of Pen Llithrig y Wrach. Bagged the unclassified top Clogwyn Llech Lefn [Bwlch y Tri Marchog Top]. Oneards to Craigeau Gleison to finish the mornings walking.nordicstar29/12/2015
Nuttall walk 1.4: Craig Eigiau - Craig Eigiau South Top - Clogwyn Llech Lefn - Pen Llithrig y Wrach - Craiglwyn - Craiglwyn N-W Top - Creigiau Gleision - Creigiau Gleision sub top - Creigiau Gleision N Topronaldo33303/10/2015
From parking area near Llyn Eigiau (SH 73159 66296) - Craig Eigiau - Foel Grach - Carnedd Llewelyn - Pen yr Helgi Du - Clogwyn Llech Lefn [Bwlch y Tri Marchog Top] - Pen Llithrig y Wrach - Craig Ffynnon.david23020130/08/2015
Passed over this top when walking between Pen yr Helgi Du and Pen Llithrig y Wrach on the 1st May 2015 Eastern Carneddau walk.knarf01/05/2015
Nuttalls walk 1.4 with Lindsay and Steve. Fine sunny but hazy day. We found this walk tough going, rough underfoot in places - 11.2 miles and 4200ft of ascent - seemed more!Crib Goch23/04/2015
Addition to Nuttalls walk 1.4 with Martin, Steve, Brian and Frank. Lovely weather, hard terrain in places.Lou23/04/2015
From Craig Eigiau via the disused quarry.JohnStoneham15/07/2014
My 9th Summit of the day (although now its a deleted Nuttal is this an anti-summit?).Approached from Pen yr Helgi du and I climbed both sides of the rocky outcrops to officially bag it. Great views as has been said over the valley. This was the penultimate point, now onwards to Pen Lithig Yr Wrach. My route today was Llanfairfechan, the North wales path, branching off to a track, Carnedd Y ddelw, Drum, Foe-Fras, Carnedd Gwenllian, Foel Groch, Yr Elen, Carnedd Llewellyn, Pen Yr Helgi du.Dazingdale05/07/2014
Parked at car park near Llyn Eigiau Resevoir. Craig Eigiau, Carnedd Llewelyn, Pen Yr Helgi Du, Clogwyn Llech Lefn, Craig Ffynon and Moel Eilio. Very warm, some exceptional views :-)AlunRees3101/04/2014
From Pen Llithrig y Wrach to Pen yr Helgi Du. Fantastic views, sunny day. Solo.Saggers16/08/2013
coming from carnedd LlewelynMad Tom07/11/2012
From pen yr Heiglu Ddu on the way to Pen y Llithrig y wrachHillboBaggings07/11/2012
From parking area near Llyn Eigiau (SH 73374 66499) - Craig Ffynnon - Pen Llithrig y Wrach - Bwlch y Tri Marchog - Pen yr Helgi Du.david23020126/06/2011
walked after Pen LLithrig y wrachRekrab27/04/2011
Debs and GoskaMountain Goat02/01/2011
From Pen Llithrigh to Pen yr Helgi Du with Punit and LouiseJim T25/09/2010
From Llyn Eigiau, over Cefn Tal-llyn-Eigiau, Foel Grach, Carnedd Llewellyn and Pen-yr-Helgi Dumavero1030/08/2010
Part of ridge between Pen yr Hegi Du and Pen llithrig-y-wrachBen Lowery02/05/2009
Part of 18 km CWM EIGIAU HORSESHOE (walk 5.4 of Hilwalking in Snowdonia)fellowsa25/04/2009
Walk back to cottage in Trefriw solo visionset01/09/2008
Solo.Dangerous Dave05/06/2008
a long day with lovely weather, many tops and mighty views. start / finish at llyn cowlydstig_nest02/06/2007
Have been over or (usually) bypassing summit on S side, many times, as is on Paddy Buckley route. This was my 2nd extended Round, 55 peaks in 23h36RHW16/09/2000
From Tal y Waun, via Pen Llithrig y WrachJamesD197212/05/2000