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Name:Mynydd Llangynidr
Hill number:3520
Height:557.6m / 1829ft
Parent (Ma):2260  Cefn yr Ystrad
RHB Section:32A: Llandovery to Monmouth
Nuttall/Wainwright area:Black Mountains
County/UA:Powys (CoU)
Catchment:Usk
Class:Hump, Dodd (500-599m), Dewey, Clem
(Hu,Tu,5,Dew,Cm)
Grid ref:SO 12349 15143
Summit feature:ancient cairn
Drop:102.5m
Col:455.1m  SO 1103 1511  
OS map sheet(s):(1:50k) 161
(1:25k) OL13S
Survey:obvious summit/Trimble GeoXH 6000
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 93 users, only the latest 50 shown - Show all)ByDate of Ascent
3 of 6. Ysgyryd Fach, Blorenge, Mynydd Llangynidr, Mynydd Gethin, Mynydd Bedwellte, Cefn Manmoel.PGCE26/10/2018
Parked in Trefil and followed road past quarry entrance road, then onto moorland. Nice hill with great views.Ramblingpaul22/05/2018
From quarry road zigzag/ junction a mile past Trefil (parked beyond the road the trucks were using). A clear, rough ATV track to between cairns then narrow path to summit. Reasonable mountain views, interesting moorland/old quarry views- but the big, working Trefil quarry is out of sight. Slight short cut back but really only sheep tracks, meeting the ATV track about 400 m nearer the quarry road. After drive from home in NW Surrey- went through Blaenavon but thought I should do this first with the gate at Trefil being closed at times (but open until 5 on Friday)pwheeler19/04/2018
Parked just beyond the point where the quarry road turns back on itself at 113146 (quarry road open to traffic Mon-Fri from 8am - 5pm; a few potholes) - From hairpin bend, up well-used ATV track for just over 1km & then NW along faint path through heather for less than 200yd to ancient cairn summit. (S)gerrybowes20/02/2018
Parking in the car park to the NE then along ROW, round the back of the old quarry workings, nice little walk and views, very quiet at summit :)griefmiester19/02/2018
Snow cover.Adrian02/02/2018
Found OS Block a few hundred yards to SE.Dusty31/12/2017
A walk up from the quarry barrier. At the far end of the quarry I headed on to the hill along a half decent track. The summit was a huge cairn offering good views to the central peaks of the Beacons. I did see plenty of Wheatears, Skylarks, Meadow Pipits, Red Kites and a Peregrine. I agree with the gate as will stop fly tipping etc.isabelle19/08/2017
Parked in Trefail at the quarry barrier then north along the track till the point where the quarry road turns back on itself at which point I headed east up onto the hill on a reasonable track. Went to this summit first with its enormous cairn before heading east to the trig point. Lovely day.Father Ted05/04/2017
With R and T. Walked from Trefil up to Bevan monument, quick loop to the west to look at the view then across to Mynydd Llangynidr and the Chartists' Cave. Showery weather.clyoung16/02/2017
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 across from the B4560 and up here after visiting chartists cave. Fairly flat landscape, not many paths, lots of heather - perfect.Neolith15/08/2016
Twyn Cilog and Mynydd Llangynidr from Trefil (there is a barrier across the road just north of Trefil). Mostly pathless - just over two hours.clivevilla19/06/2016
From the car park at Blaen Onneu quarry, via the Blaen Onnau trig point and the Chartists' caveMariana Trench22/04/2016
From the quarry road at SO 11045 15080. Took various sheep tracks east over the moor to the huge summit cairn. Walk continued to Blaen Onneu. With MP, on a survey. NOTE the gates to the quarry road are locked just north of Trefil between 17:00 and 06:30. The car got locked in, but we eventually tracked down the security guard at the Trefil Quarry who kindly let us out. Don't know about the gates at weekends - most likely locked all the time.Man of Kernow112/08/2015
Walked up from the minor road to the SW with Chris Peart and Colin Crawford.Dugswell204/07/2015
With Doug and Chris. Found a clear path but only on the descent!Colin Crawford04/07/2015
Parked in Trefil. Walked up surfaced road to where there is a junction. Followed quod bike track to a sink hole and then direct to top. Back to Trefil directly across the moor, eventually picking up a track (shown on the 1:25,000 OS map) back to the villageMikeM13/06/2015
From quarry road up track and then on over featureless moor other than the odd sink hole or pit. Drifted a bit east to wrong ancient cairn before crossing to summit and finding quad track back to start.SS16/03/2015
2/7 Easy summit to find one large cairn on top. wonderful views easy ascent and descentFergalh11/01/2015
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
Parked by the gate so not to get locked in, easy walk from hairpin on sheep tracks.rhalstead10/01/2014
The guidebooks say 'eeek no paths' and 'you'll get lost and fall down the cave.' So from the car park at the quarry to the NE (on the highest B road in Wales allegedly), I followed clear path first to the trig at Blaen Onneu (146 159) and then a clear path WSW right to the front door of Chartists cave and the Cairn/summit short distance beyond. And that was in mist with 50 yds visability. Easy. And no real boggy bits either.dicky30/06/2013
Good parking at roadside car park on the B4560 approx 4km NE of the HuMP. Paths not very distinct. We took in the trig point en-route which is approx 2.5km to the NE, there is a clear path from here to the HuMP summit which is not shown on the OS 1:25k map, it's not that good, but better than battling 2.5km over rough moorland. A lot of shake holes (or sinkholes) to be seen on the way, also the Chartists Cave, which the local council have commemorated with an information plaque, can be seen at the side of the path close to the summit. Summit is a large mound of rocks, visible from some distance.jonglew23/12/2012
Parked on quarry road at 114145. Large, hollowed out cairn on summit.steve hudson28/11/2012
Park on narrow road beyond Trefil. Across flat upland moor finding occasional faint footpaths to a large tumulus at highest point. 15.45. 2 horses wandering about. Flat calm.arranc09/08/2012
Parked by locked gate. Followed road in then up on to upper road via track through edge of quarry. Followed sheep tracks up to Cairn and peak. Out to Chartist Cave and contourd round and made way back down to road.rypj8311/04/2012
Ignored warning signs on quarry road and drove onto private road. Got locked in - police came eventually with right key. They were quite friendly about it. Another HuMP bagger turned up whilst I was waitingMartin R30/07/2011
Parked SO 11316 14752. Looks like hard going but there are many small path through the heather. Very bleak. Great cairn. Pleasant walk.destaylor13/05/2010
Galltywenallt15/11/2009
Talybont Trial 20geoffh1210/10/2009
walked from trig point to chartist cave and then summit cairnhodder02/02/2007
Continuation from Trig pointRhayader_wander25/06/2005
fine summit area, big tumulus, reached across heather. road to W (N thru Trefil) RHW19/04/1998
Parked at SO 15676 17063 led a group of scouts past the trig point > MYNYDD LLANYNIDR summit cairn area full of shake holes > CPTony Hartry07/04/1997
K Cambrian Waycrazy30/05/1996
1 ascentabbo0001blank
amarillo-oro-como06/07/2018
stephenbuda24/06/2018
Kiltie19/05/2018
garethr10 11/11/2017
GaryJones14/09/2017
salen23/10/2016
underhill20/03/2016
boxblade05/12/2015
Chris Peart04/07/2015
salen12/04/2015
DanKanaris15/03/2015
Campbell Singer01/02/2015