| Name: | Carn Hyddgen [Carn Gwilym] |
| Hill number: | 3445 |
| Height: | 566m / 1857ft |
| Parent (Ma): | 2161 Pumlumon Fawr [Plynlimon] |
| County/UA: | Powys |
| Topographical area: | WM02 Pumlumon-amlwg |
| SMC/RHB section: | 31A: Aberystwyth to Welshpool |
| Nuttall/Wainwright area: | Central Wales - Pumlumon |
| Catchment: | Rheidol |
| Class: | Dodd (500-599m), Dewey (Tu,5,Dew) |
| Grid ref: | SN 79233 90831 |
| Summit feature: | southerly of two very large ancient cairns |
| Drop: | 52m |
| Col: | 514m SN803926  |
| OS map sheet(s): | (1:50k) 135 (1:25k) 215W |
| Survey: | obvious summit |
| 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. Please quote the hill number and hill name.
| Logged Descriptions (logged by 69 users, only the latest 50 shown - Show all) | By | Date of Ascent |
| FB at SN 77966 89126 > Banc Llechwedd - mawr > FB at SN 77993 90928 > Carn Hyddgen (Carn Gwilym) > Croesau Hyddgen > Foel Uchaf > FB at SN 78485 89158from GR: SN 77490 87952 | ronaldo333 | 14/10/2023 |
| Parked at the Glaslyn access gate then along track to Bugeilyn. Continued along track across Tarren Bwlch-gwyn to Clipyn Du. By far the easiest part of the walk as it was then wet and rough terrain to capture the four tops of Carn Hyddgen, Foel Uchaf, Foel Isaf and Llechwedd Crin. Sloshed up Banc Bugeilyn for good measure before retreating to the van for succour, tea and biccies. | summitter | 30/08/2023 |
| From Maesnant. Track NE and bridge then track N. After Nant y Garn stream headed NE then E on grass. ATV track above 450m to col east of croessau hyddgen. On towards Foel Uchaf on sheep track then up grass after fence crossing to reach FU summit cairn. Returned via same route and took in Carn Hyddgen on the way. | Moorponder | 27/06/2022 |
| 3/11 I roughly followed GB's route from the cattle grid at 837952 bagging 7 Deweys and small detours to get 4 nearby minor peaks. Visited Clipyn Du, Mawnog, Carn Hyddgen, Foel Uchaf, Foel Isaf, Llechwedd Crin, Banc Bugeilyn, Esgair Greolen, Bryn yr Wyn, Foel Fadian, and finishing with Bryn y Fedwen. Some tough pathless sections, but also some quick bits with cart and quad bike tracks. Splendid views! A total distance of 27.5km with 980m ascent in 8.5 hours. | silveracorn_alan | 09/04/2022 |
| Parked at 779954 for a circuit of 10 Tumps. Tracks and sheep paths, plus a fair amount of pathless terrain. 5/10 | PGCE | 13/08/2021 |
| More wild sheep pasture. Two very distinctive and large stone cairns on summit. Cloud lifted. From Foel Uchaf and onto Bryn Moel, with tracks most of way back to car at road end to N from here. | Denise | 15/05/2021 |
| 3rd summit on clockwise round of 8 Tumps starting with Clipyn Du and ending on Pen y Darren. An excellent walk in wild and remote country. Terrain generally OK with some good tracks to help one along. | RichardM | 15/05/2021 |
| easy park 837952 tracks then over top of Graig Fach back to track near dam then Clipyn du from highest point of track return to track and ATV where can to Ochr LLygnant acros moor some faint paths to Carn Hyddgen walk then as stright as can to Foel uchaf, Foel Isaf Llecwedd Crin then back to track and Bugeilyn farm. Then to Bugeilyn numerous ring contours and flat top point 551 on os map appears high point down SE to esgir grolen and Bryn y wyn return east of Banc bugeilyn using drainage ditch on 470m contour easy walking live badger sett 8334 9290 then across old mine working to track on to Foel Fadian easy tracks and then lastly Bryn Fedwen about 600 metres from car, 8 hrs total best top of day Carn Hyddgen with cairns and iviews of Pumlumon and numerous Marilyns | underhill | 17/03/2021 |
| 3/7 - cold wet and strong wind - quite a trek across rough boggy ground, then an improving path along the valley - couldn't locate a path up hillside to the summit | wychwood | 13/12/2019 |
| Third of six Dewey's on a walk just over 15mile in length starting from the memorial NE of Foel fadian. Also taking in Foel fadian, Clipyn Du and then from Carn Hyddgen onto Foel Uchaf, Banc Bugeilyn and Esgair Greolen. | WAYNE ROWLETT | 30/03/2018 |
| petey | 30/09/2017 | |
| Easy parking by track SW of Bryn y Fedwen. Bryn y Fedwen, Foel Fadian, Banc Bugeilyn, Cribyn Du, Carn Hyddgen, Foel Uchaf, Foel Isaf, Llechwedd Crin. | ijpowell | 07/07/2017 |
| 2/5 (Banc Llechwedd-mawr/Car Htddgen (Carn Gwilym)/Foel Uchaf/Foel Isaf/Llechwedd Crin) | Fergalh | 07/05/2017 |
| Included in a Dewey bagging trip from the parking space next to the cattle grid at 837952. Started with Clipyn Du & continued to Carn Hyddgen, Foel Uchaf, Banc Bugeilyn, Esgair Greolen, Foel Fadian & Bryn y Fedwen. The approach to Carn Hyddgen was mainly pathless & tussocky until gaining the NE ridge. (PM) | gerrybowes | 26/04/2017 |
| 2nd of the day. From Clipyn Du over some rough terrain. Just over 2 miles with GB. | bolton | 26/04/2017 |
| From the cattle grid 837952. I did a round of Lllechwedd Crin, Foel Isaf, Foel Uchaf, Carn Hyddgen, Clipyn Du and Mawnog. Over five hours but the pathless bits were not too bad underfoot. | clivevilla | 17/08/2016 |
| Parked near lane-end before Maesnant (SN 77321 87851) - room for 4-5 cars. Took stony track NNW, fording river (would be tricky in spate - but bridge 100m upstream) to take track north up Cwm Hyddgen. Then climbed slopes east to summit cairns. Walk continued to Foel Uchaf. Solo. | Man of Kernow1 | 31/07/2016 |
| Alone from Maesnant, a dawn walk at 5:30am | Rob Pen y Garn | 17/04/2016 |
| Walked over from Maesnant. Some trouble crossing even little streams this day after heavy rain | Neolith | 07/05/2015 |
| Parked at Maesnant GR 775880. Followed track then crossed bridge. No paths to summit apart from sheep paths and bits of quad bike bits. Excellent summit. | destaylor | 01/04/2015 |
| From Foel Uchaf. Two cairn on the top remind me of something.On lone backpack. | mick | 04/09/2014 |
| Parked at Maesnant GR 775880, space for 3 or 4 cars. Continued along track crossing river on stepping stones then crossed R Hyddgen with a long jump. A steep climb up grass/heather/bilberry slope to two massive stone cairns on top. Descended SW to Banc Llechwedd-mawr. With SH and Ron. | wombourne | 14/05/2014 |
| Start ~ 775880, end of road at Maesnant. Followed a good track to the Southern end of the hill and climbed north to the twin cairned summit of Carn Hyddgen. Descended West crossing the Afon Hyddgen at a sharp bend before making our way up Banc Llechwedd-Mawr from the North. Descended due south to new footbridge over the Afon Hengwm. | steve hudson | 14/05/2014 |
| From nature reserve, taking in seven Deweys. Saved a lamb from a mud hole near summit of Banc Bugeilyn and had fifty tractors for company on last mile back down track. | SS | 03/05/2014 |
| Walked over from Foel Uchaf | jim pererin | 24/04/2014 |
| With Clare. Start on an, incomplete, circuit, started at Maesnant. Sunny with chilly breeze. | alwaysinshorts | 19/04/2014 |
| GMC walk from Glaslyn | mike.hoult | 20/10/2013 |
| From track junction at 783 911. Done at noon on blistering day, having done 7 already, madness. Unsure if there is a path the entire length southwards down the ridge to the river crossing, be nice if there was. NOTE - later discovered this was the hot day when the SAS recruits died on Pen y Fan. | dicky | 13/07/2013 |
| Doing a clockwise circular from Glaslyn over Plynlimon. | Alan Moore | 24/01/2004 |
| Plynlimon Dewey bagging, walk 3/4; Glaslyn track 826936 - Clipyn Du - Foel Grafiau - Foel Fras - Moel Hyddgen - Pen Creigiau'r Llan - Moel y Llyn - Banc Bwlchygarreg - Banc yr Wyn - Banc Llechwedd-mawr - Carn Hyddgen - Foel Uchaf - Banc Bugeilyn - car. | RHW | 14/02/1998 |
| Derek_Snaith | 07/07/2023 | |
| Liz_N | 07/07/2023 | |
| rhif7 | 06/06/2021 | |
| Alex C | 06/09/2019 | |
| chalky1953 | 09/09/2018 | |
| TK | 23/02/2018 | |
| danduponty | 28/12/2017 | |
| boxblade | 03/06/2017 | |
| mae | 17/08/2015 | |
| Rob50 | 12/08/2015 | |
| Steve Q | 02/08/2015 | |
| DARRENG | 29/11/2014 | |
| andrew brown | 29/11/2014 | |
| Kendall | 06/09/2014 | |
| salen | 20/10/2013 | |
| stevent0809 | 25/08/2013 | |
| roddyp | 23/03/2013 | |
| kanderson | 05/03/2013 | |
| stanappleton | 01/08/2012 | |
| Andy West | 24/07/2012 |