Name:Maesglase (old GR) - Maen Du
Hill number:2146
Height:674m / 2211ft
Parent (Ma):2145  Maesglase
RHB Section:30F: Dolgellau to Machynlleth
Nuttall/Wainwright area:Cadair Idris
County/UA:Gwynedd
Catchment:Dovey
Class:Buxton & Lewis, Bridge, Deleted Nuttall
(BL,Bg,xN)
Grid ref:SH 82242 15176
Summit feature:single stone 3m N of stile
Drop:10m
Col:664m  SH820150  
OS map sheet(s):(1:50k) 124 125
(1:25k) OL23E
Observations:cairn 20m S at SH 82246 15155 is 25cm lower
Survey:Leica NA730
Survey of Maesglase.pdf
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 240 users, only the latest 50 shown - Show all)ByDate of Ascent
Out and Back from Dinas Mawddwy, Maesglase (old GR) / Maen Du - Maesglase - Craig Portas - Cribin Fawr - Waun-oer. With R+R.Dan Baddeley11/11/2023
From overnighter up Foel Dinas via waterfall. Hottest day of the year- was certainly warming up by the time we arrived at top. Dumped packs & out & backed to Craig Rhiw Erch. Returned to DM via the initially very steep NE ridge.stig_nest09/09/2023
9.8 miles 3086ft walk ,start at A470 viewpoint carpark. to Cribin Fawr, Waun-oer, Craig Portas, Maesglase and Maen Du.stephenbuda02/07/2023
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
From mapped roadside parking area to NNE (SH 8021 1702). Good track leads up to Cribin Fawr first, then a divert across to Waun-oer before getting back on track to Craig Portas, its E Top, Maesglase and then across to here. Took a steep descent NW down to Penantigi Uchaf to ascend Camlan as a final hill of the day.jonglew16/10/2022
Brief visit to E summit after west HP for Barry's final Welsh Marilyn. Levelish grass before descent down NW ridge to road- nice grassy descent, with stream crossing over fallen tree. Repeat.Denise 16/10/2022
As Jonglew for Barry last welsh Marilyn. Party of 12. Started at carpark at head of pass finished by decending to east were a car was used to transport back to start. The descent down steep ridge has been used as an extreme downhill mountainbike route with big dropoffs jumps and high death factor at start.cjo16/10/2022
Rough grass. Visit after Craig Rhiw-ErchRichardM16/10/2022
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
soloFabioski08/08/2022
6/8 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
From Maesglase. Down path on NE ridge, before turning down N, straight down to car in layby near Mynogau Uchaf.Minto30/05/2022
Parked at milkstand and walked 500m back along A470 to Ty'n-y-celyn and tracks to Maen Du and summit. Returned by Craig Maesglase to admire cwm and waterfall.lordtonult19/09/2021
Afternoon hike with my brother and his 3 children in >25° heat. Climbing from car park at Ochr y Bwlch to Cribin Fawr (659m), then making a dog-leg to Waun-oer (670m), before following horse-shoe ridge round to Maen Du (674m) on Maesglase. Descended to Dolobran. ~11Km with 790m ascent.VirtualMountain17/07/2021
https://www.strava.com/activities/5405666533/overviewrhif703/06/2021
Maesglase & Maen Du - Dyfi Hills. Parked on A470 large lay-by at SH 82643 16350 at Pont Buarth-Glas. SE over rickety fence onto hillside and followed the W side of the stream cutting through the LHS of Craig Buarth-Glas, extremely steep requiring lots of pulling on vegetation, collapsing ledges and loose rock, exciting. Up to fence and Moel cwm yr Eglwys then ridge and path to Maen Du and fence to Maesglase summit. Descended NW spur of Maen Du to around 450m then steeply down bracken and grass to cross Nant y Cae at 270m and easy pastures to gate onto A470 just W of lay-by. A really impressive mountain, tough from the north with sustained slopes of 45 degrees.jacobrichmond22/11/2020
From A470 high point car park. Cribin Fawr, Waun-oer, Craig Portas, Craig Portas East Top, Maesglase & Maesglase B&L.CJM29/09/2020
After main summitN.Morters28/09/2020
On the was along the cliffs to the new Marilyn summit.NormanW11/09/2020
See Kamoot entry for full details/gpx download: https://www.komoot.com/tour/301551783outlawcatcher22/01/2020
Along the fence line from the new summit. Views are better here.DanMaisieBex03/08/2019
Cribin Fawr Far North - East Top > Cribin Fawr North - East Top > Cribin Fawr > Craig Portas (Mynydd Dolgoed) > Craig Portas East Top (Mynydd Gartheiniog) > Maesglase South Top > Maesglase (old GR) - Maen Du > Moel Cwm yr Eglwys from GR: SH 81913 16372Hippster16/02/2019
Cribin Fawr Far North - East Top > Cribin Fawr North - East Top > Cribin Fawr > Craig Portas (Mynydd Dolgoed) > Craig Portas East Top (Mynydd Gartheiniog) > Maesglase South Top > Maesglase (old GR) - Maen Du > Moel Cwm yr Eglwys from GR: SH 81913 16372ronaldo33316/02/2019
A470, Cribin Fawr, Craig Portas, Maesglase, Maen Du, Bwlch Siglen, Foel Dinas, Dinas-Mawddwy.tim74727/09/2018
P on handy grass verge at approx 830152. Good track to start - main height gain on very overgrown path - then ok incipient path in moorland. Visited Maesglase first, then Maen Du - good views down to A470.ger26/09/2018
Ascent via Craig Maesglase from layby on A470. Good views and pleasant walk.The Playful Pig28/04/2018
Long hot walk from Dinas Fawddwy, fantastic views.Taz3818/07/2017
Missed this one when doing the Nuttall walk, so a quick up and down from the lay-by at SH826163 to complete Bridge and Buxton/Lewis lists. Steep but no difficulties.mae31/05/2017
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 the top. Had leisurely lunch admiring the views. Wonderful crags and grassy cliffs. Saw no one. Camped on Cribin Fawr that night.mick05/05/2016
Dovey hills walk with Lindsay, Steve and Frank, starting top of the pass, finishing nr Dinas Mawddwy - 2 cars. Great views, dry but very windy day.Crib Goch10/04/2016
Dovey hills walk with Martin, Steve and Frank, starting top of the pass, finishing nr Dinas Mawddwy - 2 cars. Great views, dry but very windy dayLou10/04/2016
With Martin, Lindsay & Steve and starting from parking spot on A470 used Martin's route to take in Cribin Fawr, Waun-oer, Craig Portas, Craig Portas East Top finishing on Maesglase.knarf10/04/2016
Nuttall Walk WN 10.3 West of Dinas Mawddwy from Aberllefenni. Mynydd Ceiswyn, Waun-oer, Cribin Fawr, Craig Portas and Maesglase. 20.4km with 1170m ascent in 7h15m. (S)silveracorn_alan29/03/2016
Clearly lower than main Nuttal summit. Heavy morning rain slow to clear replaced by gradually clearing skies with good visibility. Strong wind became stronger almost blowing me off my feet on many occasions. Parked in car park near 363m spot height on A470. Cribin Fawr->Waun-oer->Craig Portas->Craig Portas East Top->Maesglase->Maesglase (old GR) - Maen Du. Only 7.83 miles but comparatively a lot of ascent at 964m. No wonder felt tired on final walk back to van along A470 from Penantigi Isaf. Better to park near milepost to reduce final walk back to van.mntainman09/03/2016
Small roadside parking area on A470 at SH84778 15496 (Space for 2 cars) – Up lane opposite for about 800m & then followed waymarked path up to col by top corner of forest (828135) – NW up path alongside fence & after doing the East Top of Craig Portas did the Marilyn on Maesglase as well as Mean Du. (S)gerrybowes27/08/2015
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
Misty start followed by glorious sunshine with crisp snow underfoot for circuit Cribin Fach/Cribin Fawr/Mynydd Dolgoed/Craig Portas/Craig Portas East top/Maesglase/Maen Du/Craig Buarth GlasFergalh18/01/2015
With Bevsimon and co26/06/2014
Same day as Aran Fawddwy Lakesgirl14/06/2014
A half day walk before our journey home. We parked in Dinas Mawddwy and then ascended along the flank of Foel Dinas. We then followed the ridgeline of Craig Maenglase and went down Cwm yr EglwysGinger Dave18/05/2014
Solo on linear walk.bolton01/07/2013
As part of a circular route from Aberllefenni.JohnStoneham28/06/2013
Wild camp with Pete and Richrichardsun27/05/2012
Easy stroll from Maesglase 'new' West top. good views near edge. dry & sunny, down via ffridd gulcwm to Dinas Mawddwy. Craig Maesglase impressive from the valley.apricorum15/04/2012
From Bwlch Oerddrws (SH 80219 17029) - Cribin Fawr - Waun-oer - Craig Portas - Craig Portas East Top - Maesglase - Maesglase (Maen Du). Out and back almost by the same route, Waun-oer omitted on the return.david23020119/02/2012
with Tony and DevonStuart Hyde23/08/2011
KeithByTheC06/08/2011