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Name:Merthyr Common
Hill number:5518
Height:531m / 1742ft
Parent (Ma):2260  Cefn yr Ystrad
RHB Section:32A: Llandovery to Monmouth
Nuttall/Wainwright area:Brecon Beacons
County/UA:Caerphilly (UA), Merthyr Tydfil (UA), Powys (CoU)
Class:Current County/UA Top
Grid ref:SO 08020 11021
Summit feature:no feature: high ground W-side of Pwll Mere
Col:531m  SO080110  
OS map sheet(s):(1:50k) 160
(1:25k) OL12E
Comments:Caerphilly high point nearby
Change log:show changes for this hill entry
GPS data:show GPS entries for this hill
  • Merthyr Tydfil current county/UA top

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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 64 users, only the latest 50 shown - Show all)ByDate of Ascent
From Dolygaer. Circuit of Pant y Creigiau, Bryniau Gleision, Cefn yr Ystrad, Twyn Ceilog, Pen March and Merthyr Common. (Too foggy to go scrambling about for Cwar yr Ystrad)Arbie06/08/2020
Parked in the Hawthorns in Pantcadifor and followed the footpath out, from here I headed north through a farm (there appears to be no right of way here but I was not challenged) to reach what appears to be a gas works once on the other side I headed northeast for the top a clearly visible bump on the west side of Pwll Mere. One hour 40 minutes for the Three and half miles which also took in Pen March.WAYNE ROWLETT21/03/2020
With E. Parked by Water Works entrance at Pontsticill and took steeply rising path on opposite side of road uphill under Brecon Mountain Railway onto Merthyr Common. Lots of sheep tracks so used GPS to take direct line to summit by Pwll Mere which had dried up. Then onto Pen March and second top. Return same route. Very quiet. Saw no other walkers.Beeliner14/07/2019
4/7 More tussocks, 4th county top, still not eaten by a man eating tussocks though, lots of horse bones on way up, they must have been less luckypenbet15/06/2019
From Dolygaer. Circuit of Pant y Creigiau, Bryniau Gleision, Cwar yr Ystrad, Cefn yr Ystrad, Twyn Ceilog, Pen March and Merthyr Common. Shouldn't have bothered with the last three as it was a thankless bogfest for uninspiring 'summits'.welshyboyo27/05/2019
From the west.PGCE10/04/2019
Wandered around in the tussocks with gps to find the high point. Exciting.ngthack18/08/2018
Park at the start of the lane leading to Garth House. Don't drive up as no turning space. I did and had to reverse 400 mts. Nant Tor Gwyn difficult to cross following heavy rain. Otherwise very easy across wet moorland.Campbell Singer02/04/2018
From the start of the lane leading to Garth House. Fp not marked on map but signposted. Good walking this time of year despite surface water.Jemma Singer02/04/2018
From road side parking at Dam, up Bridleway then open access direct route following the GPS to Merthyr Common and Pen March.rhalstead23/09/2017
Pleasnt walk across rough ground from Pontsticill; on to Pen March.jonglew25/11/2016
Walked up from Garth on tracks initially, then pony trails helped confuse me, but got there eventually. With Pen March. Very wet in places.PeterD31/07/2016
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
From Pen March. Back to Twyn yr Arian.Newton Maximus08/05/2016
Parked to the SW just below No. 39 The Hawthorns at SO06364 09306 Took public footpath above No.65 & then up tarmac service road to substation Through pedestrian gate & along good tracks to 075098 ATV track & then trods to Pen March ¼km west to unmarked summit. SSW to pick up tracks back to car, a total distance of 8km. (S)gerrybowes18/12/2015
Round from Pontsticill with Merthyr Common, Penmarch, Twyn Ceilog, Cefn yr Ystrad, Bryniau Gleision and Pant Y Creigiauunderhill25/10/2015
From the water treatment works near Pontsticill. It is not as easy as it looks on the map. Much of it is pathless with parts having man-eating tussocks.clivevilla25/06/2015
Walked from Pontsticill Water Works. Under railway and through quarry to moorland. Visited Twynau Gwynion on the way to try and find OS Bolt. Return after the two hills via Twyn Pwll Morlais (another OS Bolt location).Dusty13/06/2015
5/7 Approached up from pitwelt pond (dry) and followed the river. Not easy to lacate!Fergalh08/01/2015
On the west side of the reeds of Pwll Mere on the high ground.bolton25/09/2014
From Cefn yr Ystrad.CJM25/09/2014
as pen marchdicky09/09/2014
Parked in layby by the Pontsticill village sign opposite the water treatment works (just before the weak bridge). Paths under railway up to metal gate in stone wall onto access land. Then only sheep tracks. Used compass to find Pwll Morlais then top, by Pwll Mere - both dry as result of recent hot dry weather. Navigation tough (as don't see either Pwll until virtually on top of them and almost became a GPS convert - but not quite!Hillsidenick26/07/2013
Parked easily to SW 'The Hawthorns' then track and path practically all the way.destaylor08/03/2013
Walked up from Twyn yr Arian to SE. be careful if you do the Pen March top before this one - there's a small pond between the two points before you reach the larger Pwll Mere (which is shaped like an amphitheatre) - don't get the two muddled up!wheresthepath22/04/2011
from cattle grid to the south west.asbown01/03/2010
After Cefn Yr Ystrad on clear bright day with occasional drizzle.Dugswell209/05/2009
walked on main pathway along merthyr common to twynau gwynion (nice cairns here) made my way to the county top.Still no water in tarn or pitwellt pondhodder01/12/2008
Slightly more interesting than Pwll Mere but not much. A tussocky summit with no real paths. Approached from South East.Father Ted20/09/2008
After D of E supervision - up from the west -a rough remote circuit linking obscure council top high points with zero prominence- a good mountain marathon training run-Chris Pearson21/04/2006
Unmarked slightly higher ground W-side of Pwll Merewebmaster08/09/2004
Interesting spot to find in the pre GPS days.RHW17/08/2002
Half way along its western bank is the high point. Note there was no sign of any water in the tarn.garyhoney13/02/2000
To end of green track on compass uphill over swamp for 30 minutes to Pwll Mere covered in reeds - no surface visible..arranc01/04/1999
Orienteered there - must have been close enough petey01/01/1990
Pen March (Caerphilly) is almost alongside this one - must do the two together!signyredblank
Alan Whatley07/01/2018
andrew brown16/02/2016
carole engel05/10/2014