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Name:Cefn yr Ystrad
Hill number:2260
Height:619m / 2031ft
RHB Section:32A: Llandovery to Monmouth
Nuttall/Wainwright area:Brecon Beacons
County/UA:Powys (CoU)
Catchment:Rhymney, Catchment Boundaries, Triples, Usk, Taff
Class:Marilyn, Hump, Simm, Hewitt, Nuttall,
Buxton & Lewis, Bridge, Clem
(Ma,Hu,Tu,Sim,Hew,N,BL,Bg,Cm)
Grid ref:SO 08801 13630
Summit feature:ancient cairn
Drop:180m
Col:439m  SO052172  
OS map sheet(s):(1:50k) 160
(1:25k) OL12E
Observations:base of cairn is 80cm above trig point FB (SO 08697 13736)
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, and mention the hill number and hill name.

Logged Descriptions  (logged by 373 users, only the latest 50 shown - Show all)ByDate of Ascent
From the north, after driving up minor road then potholed quarry roads to leave car at 086144, then SE around the fenced off quarry then SW to large pile of stones that mark the summit. Nice all round views.Topographer5705/09/2019
From Pontsticill Reservoir Dam SO 06232 11924 Return via DolygaerWestdenewalker26/07/2019
Parked at Pontsticil reservoir and loop following mountain railway, climbed to quarry and returned via bridleway Testing new poles out.philwhit14/07/2019
Circular from Pontsticill Reservoir. Beautiful sunny January day with clear views all around.liljonb28/01/2019
Fell run (ish) from the quarryMadjonny07/12/2018
From Pontsticill. Out along ridge and back via path along NW face.Winterfloodian25/09/2018
With Penda, Nuttall walk 13.3. Temperature high 20s Celsius. Wales' most boring hill? Would hate to be up there in cloud or mist! Interesting cairns on top and good views, however.beorwulf27/06/2018
Done the Pontsticill BW on my mountain bike, and didn't fancy getting nicked driving to the quarry, so I took a really good route from Dyffryn Crawnon. Parking is extremely difficult, but a lovely lady let me use her parking space. I took an exciting route up the mapped non-ROW from Ysgubor-isaf (ruin), which would be wet except the ground was frozen rock hard. A bit of dodging fallen trees, but the path is there. Amazing crags at the rim of the cwm, can dodge SW below them (steep) to a gap where someone has removed the top strand of the BWF allowing easy access to the BW. Steeply up again into the quarry, then SW-ish across the moor on sheep tracks to the summit plateau. Lovely in the late afternoon sun, visited all cairns and the trig. Conventional descent to the quarry and then to the waterfall to join the proper footpath down.Gill24/02/2018
2/5M Drove up through quarry to highpoint then easy stroll from there.robertphillips11/11/2017
Round Talybont Reservoir with Waun Ryddtwg2701/11/2017
park by the reservoir and follow the track up towards the quarry and take a bearing off to the trig point summitAristotle Chip11/08/2017
Good visibility.Hammy14/04/2017
Below freezing, overcast.Wycombe Wanderer09/02/2017
11.7 mile walk from Crawnon Valley (space for one car at minor roads junction),walked along road to Nantwenynen farm followed footpaths to foot of Tor-Y-Foel (bagged in 2009), bagged Bryn Melyn, along main path to Bryniau Gleison across moor to Cwar Yr Ystrad quarry, followed lane through quarry then up to Cefn Yr Ystrad across moors and onto quarry lane then up to the massive cairn on Mynydd Llanynidr, crossed easy moors north then down zig-zag footpath to Y Neuadd farm back to car. Sunny then cloudy, walk all on easy usually grassy terrain.DanTrig18/09/2016
Walked up from Pontsticill, past the inscribed stone which took some finding!Neolith28/08/2016
Hike with my two sons from Pontsticill Reservoir, ascending through unfrequented and beautiful area of shake holes to summit Cefn yr Ystrad (619m). Descending northward between open cast mines, ascending Pant y Creigiau (569m) before descending to Torpantau, and taking the Brecon Mountain Railway back to Pontsticill. Warm dry day, most clouds covered with modest cool breeze. ~15km distance, 550m ascent.VirtualMountain23/07/2016
With Zoe and parents, misty tops.Matt Smith17/07/2016
#607 - From Quarry road to north. Wellington memorial, Garn Felen, Carn Bugail and the trig. Very pleasant walking over ankle deep heather rather than the ferns, gorse and brambles of recent bags!tim74712/07/2016
Circular route from Pontsticill, via ROW under railway bridge, then cross country to Merthyr Common, Pen March and Cefn Yr Ystrad, back via track and inscribed stone. A nice walk over surprisingly remote area.Cas-gwent17/05/2016
Nuttall walk 13.3: Cefn yr Ystrad - Cefn yr Ystrad Trig - Cefn yr Ystrad North-West Top - Cefn yr Ystrad Far North-West Topronaldo33303/05/2016
From quarry road above Trefil.Lionel Bidwell29/03/2016
Good to finish Section 32. A misty, very windy and wet ascent from the quarry.jenx21/02/2016
With Jenx, from end of old quarry road. Note there is a gate at Trefil now saying no access however when we went through it was 'damaged' and not in use. Possible to drive into quarry as previously described. On the wet, windy clagged out day we had that was very appreciated. Interesting limestone features on the hill.nordicstar21/02/2016
Parked on road at SE corner of Pontsticill Reservoir. Walked back down road and took the bridle way on the left, under the railway - came back the same way. Good visibility with views across to Pen y Fan, Corn Du and Cribyn.clyoung29/12/2015
Summited in 60mph winds with Explorers in tow on HMS coursemartin-r29/11/2015
Round from Pontsticill with Merthyr Common, Penmarch, Twyn Ceilog, Cefn yr Ystrad, Bryniau Gleision and Pant Y Creigiauunderhill25/10/2015
Long walk from near Pontsticill. Parked SO 0598 1143. Took 73 mins to reach the top and 55 mins to come back down. Operated from summit trig point for SOTA on VHF.G4OBK (Phil)17/08/2015
From Pontsticill - back same way. Top few hundred feet in cloud - glad i had my GPS.Crib Goch13/08/2015
Followed Nuttall route from Pontsticill. Lovely views although the quarry is a bit grim.Ramblingpaul21/07/2015
7/7 Nice but long climb from the county top at Merthyr common. great views at end thoughFergalh08/01/2015
Parked on verge at SO 061115 then through gate onto bridleway at SO 061114. Followed bridleway then up easy slopes onto main plateau. Interesting summit with various cairns and trig.bowlesy01/11/2014
From Pontsticill on the Nuttall's route. Mist on top and interesting walk through the Dr Whovian quarry.MattM26/10/2014
With G Bowes. Wellington bomber crash site near summit also visited.John L24/10/2014
Parked by the junction S. of the dam at 060130 (Room for 1-2 cars) – NE & then NNE along the bridleway before making our way over easy ground to the summit cairn. Visited the memorial to the 6 aircrew who lost their lives here when their Wellington bomber crashed NE of the summit in December 1940. (JL)gerrybowes23/10/2014
With Meds. Parked at the water treatment works. It was my last 2000'er and I wish I had chosen something a little more inspiring for my finale.bolton25/09/2014
From water treatment works. Low cloud, drizzle, poor vis. With PM.CJM25/09/2014
Steve, Tracey and Barrie. Followed Nuttall walk 13.3. Heavy rain at start of walk but cleared up. Great views from summit.GHF10/08/2014
AN EXCELLENT WALK FROM PONSTICILL FOLLOWING NUTTALLS WALK 13.3 BUT BACK THE SAME WAY ON WAY TO BRECON CAMPSITE. LOVELY WEATHER WITH FINE VIEWS OF THE BEACONS AND THE BLACK MOUNTAINS.BURGESS29/07/2014
With Val. From Pontsticill Reservoir. Bank holiday Monday but few people around.mike.hoult26/05/2014
A very enjoyable way to spend St David's Day, with blue skies all around and fresh snow lying above 500 metres.Alex C01/03/2014
Solo ascent, walk 13.3 from The Welsh Nuttalls book. An unspectacular ascent but the summit is very interesting and the initial walk through Taf Fechan forest is pretty.Lou29/09/2013
Dolygaer - Cefn yr Ystrad - Bryniau Gleision - Pant y Creigiau - Allt Forgan - Allt Lwyd - Waun Rydd - Fan y Big - Dolygaerdavidpettit8406/07/2013
Walked in cloud. We were moved by the memorial to the crashed Wellington bomber.denisB5221/05/2013
A round of Cefn yr Ystrad, Bryniau Gleision and Pant y Creigiau from Pentywn Reservoir Dam.rhalstead06/04/2013
Trig Point.Route:Pontsticill dam-Cwm Criban-Cefn Yr Ystrad-Cwar Yr Ystrad-Gwaun Nant Ddu-Cwm Callan-Dolygaer-Pontsticill Dam.Very windy, cold, some deep snow in places. No Styles only gates, good access.Chris Williams27/01/2013
Usual starting point for this hill seems to be the southern end of the Pontsticill Reservoir, but we attacked it from the north, parking at Pont Blaen-y-glyn where there's a small car park, so as to take in the Pant y Creigiau trig point. The industrial scar left by the limestone quarry is interesting.jonglew18/11/2012
Nuttalls route 13.3 with Eilidh and Catherine. The quarry made a little hard to navigate at times. The burial cairns on top are impressive.islamidget29/07/2012
Easy single summit walk, won't be rushing back.crax7309/06/2012
walked up from pontsticill reservoir parked by dam followed track up onto moor good views of pen y fan and reservoirrussf6905/05/2012
With G. Nuttalls' route from Pontsticill and back via Dolygaer.RT197010/04/2012