Name:Mynydd Ceiswyn
Hill number:3431
Height:605m / 1985ft
Parent (Ma):2145  Maesglase
SMC/RHB Section:30F: Dolgellau to Machynlleth
Nuttall/Wainwright area:Cadair Idris
Topographical area:WN10 Aran-idris
Catchment:Dovey, Catchment Boundaries, Mawddach
Grid ref:SH 77245 13903
Summit feature:southerly of two small knolls 5m apart
Col:578m  SH 77848 14053  
OS map sheet(s):(1:50k) 124
(1:25k) OL23E OL23W
Survey:Leica NA730
Surveying Mynydd Ceiswyn (Myndd Hafod-oer) -Final.doc
Comments:Added to the Deweys and deleted following a line survey. See Database Notes.
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 116 users, only the latest 50 shown - Show all)ByDate of Ascent
Nuttall 10.3. Used the small parking area on the road bend just above the Mountain Centre beyond Aberilefenni. Further parking area about 1km along forest road after the LH fork before a forest gate on the Nuttall route. Initial path ascending through the clearcut faint - but starts by a fire notice. Once above the 2nd forest road, path is well established through the remaining woods to the ridge. Thereafter Mynydd Ceiswyn - Waun-oer - Cribin Fawr - Craig Portas - Craig Portas E Top - Maesglase - Maen Du - (back to Craig Portas) - Mynydd Dolgoed W Top. On the steep descent back into Cwm Ratgoed there is a newish bwf to cross to enter the access land woods and mapped ROW seems none existent. Instead half way down by a rotten stile aim NW to the corner of the woods by a ruin and a gate out into a grass field. Cross the grass W to pick up the ROW on the track. Very enjoyable walk with good views and an impressive grass ridge traverse between Craig Portas and Maesglase. Solo.richard6906/06/2024
En route the Waun-Oer from Mach Loop CP.M6KIO07/09/2023
A pleasant enough clockwise round of the fells above Aberllefenni made a little more exciting by my having difficulty in finding a clear route into Cwm Ratgoed.oldbagger2717/06/2023
Cambrian Way Stage 14 Dinas Mawddwy - Bwlch Llyn Bach.Rob Rees12/11/2022
Foel Dinas, Maesglase - Maen Du, Maesglase, Craig Portas East Top, Craig Portas, Cribin Fawr, Waun-oer, Mynydd Ceiswyn, Gau Graig, Mynydd Gwerngraig, Mynydd Moel, Cadair Idriskeithouk23/08/2022
1/8 Mynydd Ceiswyn, Waun-oer, Cribin Fawr, Craig Portas East Top, Maesglase, Maen Du, Craig Portas West Top, Mynydd Dolgoed. Fantastic Route from the Ratgoed Valley with nice walk out at the end. Hot day indeednickywood113/07/2022
From Bwlch Oerddrws. Waun-oer, Mynydd Ceiswyn, Cribin Fawr, Craig Portas, Craig Rhiw-erch, Maen Du and Foel Dinas.Gwastadros11/07/2022
1/4 (Mynydd Ceiswyn/Waun-Oer/Y Garn/Uwch Mynydd)Fergalh05/11/2017
With Cabe.simon and co02/07/2017
From car park to WSW, up the footpath to start with but it peters out part way up. Kept right of the craggy part to gain height then along ridge/forest edge to summit.clivevilla12/04/2017
On the way up to Waun-oertsharp22/03/2017
From cad west car park, Mynydd, Ceiswyn, Waun-oer, Cribin Fawr, Cribin Fawr East top, Mynydd Dolgoed, Craig Portas, Craig Portas East Top, Maesglase, Maesglase old top, Maesglase South top,back over Waun oer to cp 8hrs walkingunderhill21/01/2017
From near Aberllefennli with Mark, Hamish and Huey. Hot day. Long slog up through the forest. Pleasant walk back down by the old quarry.Saggers08/05/2016
From Aberllefenni on two night backpack. Followed Nuttall route through forest. Devastation just above the village with recent clear felling. Grassy knolls, great views.mick04/05/2016
Solo walk using the Aberllefenni bus service. Some muddy forestry tracks at the start, then a nice uphill footpath which disappeared at some point. I took a more direct route and ended up climbing the little cliff of Mynydd y Waun. Very glad to finally make the top of Mynydd Ceiswyn. Hanging cloud obscuring Cadair Idris. Onwards to Waun-oer.thesweetcheat09/05/2015
Nuttall walk 10.3: Mynydd Ceiswyn - Wann-oer - Cribin Fawr - Craig Portas E top - Maesglase - Maesglase Maen Du - Craig Portas E top - Craig Portas - Mynydd Dolgoedronaldo33307/03/2015
As part of a circular route from Aberllefenni.JohnStoneham28/06/2013
Linear walk from Brynllys to Arthog via all the Maesglase and Cadair Idris Nuttalls.davidpettit8405/05/2012
Crazily long linear walk with CUHWC; Ty-nant - pony path - Cyfrwy - Craig Cwm Amarch - Cadair Idris - Mynydd Moel - Gau Graig - Mynydd Ceiswyn - Waun-oer - Cribin Fawr - Craig Portas - Maesglase - Foel Dinas - Dinas Mawddwy - Bryn Hafod bunkhouse.Mark Jackson14/05/2011
Same as MJ.AGWilliamson14/05/2011
Not correct date. No log kept. Walked with Derek. Mynydd Ceiswyn, Waun-oer, Cribin Fawr, Maesglaseijpowell01/07/2010
From Aberllefenni.Wheelsy15/04/2010
an excellent walk which took in the tops of maesglase, cribyn fawr, waun oer and mynydd ceiswyn. we started at grid ref sh777100 near the hamlet of aberllefenni. it was a round of 21km. oh and it was the first outing for new boots! never again! always brestig_nest15/04/2007
Parked at Aberllefenni by the field studies centre. Walked northwards on the tracks before taking the right of way north west onto the ridge. Once on top the weather started to tip it down and visibility became negligible.garyhoney20/07/2002
CK, club SheilaS26/01/2002
Third ascent.thenomad07/07/2000
adequate, fair views. ochr y bwlch - bwlch llyn bach (yt merio'dd round) RHW09/05/1998
K Cambrian Waycrazy07/06/1996
Second ascentthenomad21/11/1995
First visit.thenomad05/10/1992
Rare visit as on route up from top of pass to Waun Oer where you need a second car to make a circularRhayader_wander02/06/1990
En route Llangollen to Barmouthsummitsup22/05/1990
All summits visited today were well worthwhile, making a grand traverse: Bwlch Llyn Bach- Mynydd Ceiswyn- Waun-oer- Cribib Fawr- Craig Portas- Craig Rhiw-erch- Maesglase- Bwlch Siglen- Dinas Mawddwy. For comments, see Maesglase log.pwheeler24/04/1987
with the dog Kim from layby on A487 and then onto ridge to Cribin Fawrtrimarc204/09/1985
Straight after my last final Uni exam, down by bus from Sheffield,then 4 glorious days of solitude, walking between hostels across lovely empty 2000 feet hills (Bridges). 6,500feet of ascent today (Day 1) in hot and humid conditions made for a hard day over 12 tops of the Cader group from Kings Dolgellau to Dinas Mawddwy YH. This top on natural line acros the hillsChris Pearson10/06/1984
Day 10 of Cambrian Way from Mallwyd to PenmaenpoolPeterD31/05/1982
Alan Whatley29/08/2022