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| Name: | Bwlch Mawr |
| Hill number: | 1953 |
| Height: | 510.3m / 1674ft |
| Parent (Ma): | 1952 Gyrn Ddu |
| RHB Section: | 30A: Anglesey and the Lleyn Peninsula |
| County/UA: | Gwynedd (CoU) |
| Catchment: | Minor Rivers only (South) |
| Class: | Hump, Dodd (500-599m), Dewey, Submarilyn, Clem (Hu,Tu,5,Dew,sMa,Cm) |
| Grid ref: | SH 42673 47851 |
| Summit feature: | large boulder 12m ESE of trig point |
| Drop: | 145m |
| Col: | 365m SH414466  |
| OS map sheet(s): | (1:50k) 115 123 (1:25k) 254 |
| Observations: | rock outcrop 135m SSW at SH 42643 47721 is 0.35m lower |
| Survey: | Leica NA730/Leica GS15/Trimble GeoXH 6000 |
| Change log: | show changes for this hill entry |
| GPS data: | show GPS entries for this hill |
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 123 users) | By | Date of Ascent |
| HP is blocky rock outcrop near trig; cairn S of wall is lower. Approached via muddy RoW (path) from Clynnog Fawr with interesting 7th C well and St Beunos Church. Superb sunny views of coast ,sea and wild sheep pastures | Denise | 08/04/2018 |
| From Clynnog Fawr by the wet and muddy bridle way then rough grass of hillside. Excellent views from summit. | RichardM | 08/04/2018 |
| Up and down from the radio mast. Anxious twenty minutes as dropped car key before half way up. Kept going though. Such is this bagging obsession. Found it. | Eddie | 10/01/2018 |
| Me Alf and Darryl. | jrj | 27/10/2017 |
| From Gyrn Goch on a CW circuit of 6 hills, on to Pen y Gaer. Parked at entrance to Ynys Ddu farm (SH 3971 4523). Nice top. | jonglew | 08/09/2017 |
| Anticlockwise route over 5 tops of the group. A very fine summit. Very rough going. | stig_nest | 20/07/2017 |
| From road to East by transmitter, en-route to Gryn Ddu | tim747 | 07/06/2017 |
| With Trefor. From Aerial to the east. Straight to summit. On to Gyrn Ddu after.Back via public footpath to the south. Great views and good weather. | mike.hoult | 07/04/2017 |
| From mast at 437478 and W on Llyn Coast Path (not very clear to begin with), heading to top after first wall. Crossed wall stile in the corner to access the trig. Then on to Pen y Gaer. | milimana | 02/03/2017 |
| 4/4 Last of four on misty day (Foel/Mynydd Cennin/Moel Brnmoid/Bwlch Mawr) | Fergalh | 22/01/2017 |
| Parked in Llanaelhaearen and climbed Gyrn Du first before coming over to this one. Came down off Gyrn Du the way I had gone up so had a long contour round till I picked up the track. All OK till you hit the mother of all stone walls near the peak. Hope they won some competitions for this one. | Father Ted | 08/10/2016 |
| Parked just below mast 435478 at good space then followed ROW until it dropped slightly. Interesting direct line over rocky bluffs, went to false summit then scaled the wall to visit trig pt and ascend extra 35 cm to claim hill. We walked down W by the wall and found a wall stile- little easier than climbing the wall, and returned using the path to the mast. So clear we could make out Preseli, Wicklow, Mourne and IOM. With Pete | pwheeler | 20/09/2016 |
| A difficult 3hrs walk with Christopher H in cloud over the 3 tops of the Gyrn Ddu group. The bridleway from Clynnog Fawr past Pen-yr-allt-uchaf was severely overgrown. Easier once on the fell, though no path. Wall near summit must be climbed. Easy going following wall S to ROW. | Mark Jackson | 24/08/2016 |
| Parked at end of farm track for Llethr-ddu then followed row to Fron-heulog. Straight ascent to Gryn Ddu with slippery boulder hopping at end. Descended east then north and up Gyrn Goch then back and round by walls to Bwlch Mawr (best 'stile' is 100m to west). Returned by row but diverted to take in Moel Bronmiod cutting down directly to Llthr-ddu on descent. | SS | 07/08/2016 |
| Circuit including Gyrn Ddu and Gyrn Goch. Started at 438475. Followed path W in thick mist, GPS came in very handy as strayed from the path many times. Summit very rocky, fine views especially towards sea. | JamesD1972 | 18/07/2016 |
| A direct ascent from the mast at SH437478 bagging Bwlch Mawr,Gryn Ddu and Gyrn Goch. | mad max | 12/07/2016 |
| Parked at end of farm track at SN39710 45239 (Room for 3 cars) – Up farm track & path to deserted houses on waymarked track – Gyrn Ddu – E. down to col & waymarked track – N. alongside wall to rocky summit (JL) | gerrybowes | 03/07/2015 |
| With Jenx on the Marilyn circuit. Fine hill this. | nordicstar | 24/06/2015 |
| from E at mast 435478 and on to Gyrn Ddu in mist and rain | Thearlaichdubh | 20/06/2015 |
| On a circuit from Clynnog Fawr with Sue, on a fine day. | Phreerunner | 20/11/2014 |
| petey | 16/11/2014 | |
| Start ~ 405487.Used Row alongside the Afon Hen to gain the hillside before following the walls up to the summit of Gyrn Goch, a somewhat sporting ascent. Moved on to Gyrn Ddu and then walls and paths to Bwlch Mawr. All the summits are rocky with great views, took a direct descent to follow forest edge to meet outward route. With Wombourne. | steve hudson | 21/04/2014 |
| Parked at GR 405487, room for several cars on section of old road. Took path alongside stream through wood eventually out onto open hillside. Climbed extremely steep grass hillside by wall to Gyrn Goch then on to Gyrn Ddu. Continued to Bwlch Mawr. Excellent views. Descended to edge of forest eventually joining outward route back to car. With SH. | wombourne | 21/04/2014 |
| A direct ascent from the mast at SH437478. | Chris Peart | 19/01/2014 |
| Pant Glas to llanaelhaearn. Slow going bouldery terrain. | Smudge | 30/11/2013 |
| KeithByTheC | 20/09/2013 | |
| Survey/walk with Mountain Views team. Roadside parking for 2 or 3 cars at SH437475. | webmaster | 31/08/2013 |
| joint survey with MountainViews | Galltywenallt | 31/08/2013 |
| From SH 437 477. | summitsup | 18/07/2013 |
| Bwlch Mawr, Gyrn Ddu and Gyrn Goch. Parked on A499 and ascended via the forest. Tough ascent of Bwlch Mawr with no path. | clivevilla | 15/02/2013 |
| With Mora, from minor road to East | BLACKHILL | 15/02/2013 |
| Pleasant day out visiting Lleyn HuMP's and trigs. | Alex C | 12/02/2013 |
| From Clynnog-fawr, up an overgrown bridleway to access land. | Sprog | 08/09/2012 |
| with Jamie, intersting clockwise cicuit that ended with uncomfortable push through thickening increasingly high gorse on the lower NW slopes of Gyrn Ddu | vegibagger | 05/05/2012 |
| From Gyrn Ddu. | davidpettit84 | 19/06/2011 |
| From East path. Do best to follow path until after stiles and gates reach a solid wall. At N end there is a large gap in it next to a stile. After gap grassy to top. If not this way tricky boulder fields. Guess which way I went up! | destaylor | 26/02/2011 |
| Circuit from Clynnog Fawr with Gyrn Ddu and down via Gyrn Goch. Variable weather - no rain but both summits deep in cloud. Stone walls aid location of summit trig. | nosdrahcir | 04/08/2010 |
| morning walk along with gyrn ddu - sunny over lleyn, cloud beyon hebog | gigglejon | 30/03/2008 |
| Revisit date. First date not recorded. see log on TrigpointingUK.com. | RHW | 27/05/2007 |
| Arrived here from Gyrn Ddu on very easy going paths | garyhoney | 03/05/2004 |
| Galltywenallt | 25/05/2003 | |
| Climbed in a fierce freezing wind, in sunshine. | Man of Kernow1 | 23/02/2002 |
| Sunday evening ascent after working on JG pre-exp w/end at Cobden's. Hot -bare top. Feeling tired.My log tells me I first visited the trig in the middle of Canaerfon- and one on the beach which had gone I have no memory of this, but is the sort of thing I did ! | Chris Pearson | 01/07/2001 |
| From east conbined with Gym Ddu while locuming in Caernarfon. | Dugswell2 | 04/11/2000 |
| On path over 2 stiles and 2 wire fences into cloud. Swampy section and more rocks. Flat tussock leading to final rocky outcrop. Large wall 20m from column. English welcome in Wales but don't stay - painted on column. | arranc | 18/07/1999 |
| From Clynnog-fawr | Alan Moore | 20/07/1996 |
| With DG | JohnIvor | 19/11/1995 |
| Date unknown | RHW | 01/01/1990 |
| Sleepwa1ker | 15/09/2019 | |
| Tony J | 25/08/2019 | |
| thenomad | 05/08/2019 | |
| Robert Kemp | 10/07/2019 | |
| boxblade | 06/07/2019 | |
| raymondwilkes | 07/09/2018 | |
| Peter_wth | 01/06/2017 | |
| Deedubr | 12/07/2016 | |
| DDAY | 12/07/2016 | |
| TK | 25/06/2016 | |
| Dusty | 31/03/2016 | |
| nicolajane | 26/09/2015 | |
| jenx | 24/06/2015 | |
| DorisLC4 | 26/04/2015 | |
| Rob50 | 06/09/2014 | |
| Kiltie | 04/08/2014 | |
| softsquare | 11/07/2014 | |
| OLIVERS | 27/04/2014 | |
| jim pererin | 08/04/2014 | |
| MikeM | 15/03/2014 | |
| stevedixon | 07/03/2014 | |
| Colin Crawford | 19/01/2014 | |
| Campbell Singer | 21/11/2013 | |
| maknipe | 12/10/2013 | |
| hughbagger | 29/09/2013 | |
| johnbarnard25 | 31/08/2013 | |
| iaindbrown | 20/08/2013 | |
| RobertP | 30/12/2012 | |
| DARRENG | 07/07/2012 | |
| foggieclimber | 10/05/2012 | |
| wychwood | 25/03/2012 | |
| AlanD | 16/04/2011 | |
| MM | 10/04/2011 | |
| Martin R | 05/03/2011 | |
| fortyniner | 20/01/2011 | |
| Alan Whatley | 22/08/2010 | |
| Andy West | 18/08/2010 | |
| Steve Q | 13/09/2009 | |
| jimbloomer | 18/06/2009 | |
| dgresty | 31/05/2009 | |
| andrew brown | 30/05/2009 | |
| chriswatson | 10/05/2009 | |
| rambler_gary | 24/02/2009 | |
| bogdodger | 31/01/2009 | |
| carole engel | 31/01/2009 | |
| Anton | 31/01/2009 | |
| Colin Crawford | 12/11/2008 | |
| alymoxey | 17/08/2008 | |
| Phil M | 17/08/2008 | |
| BaggerGutt | 18/07/2008 | |
| mae | 12/07/2008 | |
| AndyS | 21/10/2007 | |
| stevent0809 | 26/07/2007 | |
| AHP | 05/05/2007 | |
| Neil Midgley | 18/04/2007 | |
| John Kleiser | 01/04/2007 | |
| Edwin Gradwell | 29/10/2005 | |
| David Gradwell | 29/10/2005 | |
| George Gradwell | 29/10/2005 | |
| alda | 22/06/2005 | |
| Adrian | 18/06/2005 | |
| Halfdecent | 18/06/2005 | |
| ianwatson | 06/03/2004 | |
| Tricky | 05/10/2003 | |
| Moorponder | 27/07/2002 | |
| chalky1953 | 27/10/2001 | |
| andrew.allum | 01/01/2000 | |
| rpettit | 01/01/2000 | |
| David Purchase | 07/05/1998 | |
| GordonAdshead | 00/03/1998 | |
| richtea5040 | 29/06/1996 | |
| ajwxyzt | 29/06/1996 | |
| IainT | 29/09/1984 | |
| DewiH | 07/04/1955 | |
| Bunburyboy | blank |