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Name:Mynydd Ceiswyn
Hill number:3431
Height:605m / 1985ft
Parent (Ma):2145  Maesglase
RHB Section:30F: Dolgellau to Machynlleth
Nuttall/Wainwright area:Cadair Idris
County/UA:Gwynedd (CoU)
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 88 users)ByDate of Ascent
A Peckish11/07/2018
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
Steve Clark25/06/2014
Mark Sims29/08/2013
Neil Haslewood29/08/2013
N Haslewood ALL29/08/2013
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
andrew brown13/02/2011
Rob Pen y Garn02/01/2011
Lynfa Penygarn02/01/2011
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
David Purchase03/05/2003
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
Man of Kernow102/12/2001
Third ascent.thenomad07/07/2000
Martin R31/12/1999
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
thenomad 2nd21/11/1995
The Dancing Mon19/08/1995
First visit.thenomad05/10/1992
Denise 26/01/1992
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
David Purchase23/04/1989
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
Rob Rees26/02/1984
Rob Rees05/12/1982
Day 10 of Cambrian Way from Mallwyd to PenmaenpoolPeterD31/05/1982
Alan Moore12/10/1980