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| Name: | Cefn-du |
| Hill number: | 14401 |
| Height: | 442m / 1450ft |
| Parent (Ma): | 2000 Moel Eilio |
| RHB Section: | 30B: Snowdonia |
| Nuttall/Wainwright area: | Snowdon |
| County/UA: | Gwynedd |
| Catchment: | Gwyrfai, Catchment Boundaries, Seiont |
| Class: | Tump (400-499m) (Tu,4) |
| Grid ref: | SH 54845 60381 |
| Summit feature: | rocky/heathery mound 28m E of trig point |
| Drop: | 71m |
| Col: | 371m SH556600  |
| OS map sheet(s): | (1:50k) 114 115 (1:25k) OL17W 254 263S |
| 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. Please quote the hill number and hill name.
| Logged Descriptions (logged by 83 users, only the latest 50 shown - Show all) | By | Date of Ascent |
| Glorious cold sunny day. Perfect views. 3 1/2 hour circuit from Llanberis with Twiggy. | desperate dan | 10/02/2024 |
| DARRENG | 02/12/2023 | |
| Alan Caine | 25/11/2023 | |
| While speciation Marathon Eryri | Jim T | 28/10/2023 |
| As others parked up at road end in car park and then took the track up, veering off to follow fenceline to the top, near collapsed red brick building. Very windy on top. Saw a lady with her child in a protected area at the back of her head and I thought thats different, | Dazingdale | 27/09/2023 |
| As Mark Sims. From small parking area at end of minor road at 550599, E. along track for about 300m, forked left & after 15m or so turned left & headed N. up track to junction at SH 553602 - Turned left & W. along grassy track for about 100m & then beared right up decent path, faint at first, to the heathery mound E. of summit. | gerrybowes | 19/08/2023 |
| With Rufus from Maen Llwyd Uchaf parking at the very top of the paved road. | jacobrichmond | 15/02/2023 |
| beckybags | 29/07/2022 | |
| A Peckish | 29/07/2022 | |
| 10.6 mile walk from end of little road leaving Llanberis (not many spaces to leave cars). Following good path into Maesgwm valley then a fairly steep pull onto Moel Cynghorion. We descended back to the col and climbed very steeply onto Foel Goch, then followed the lovely grassy ridge over Foel Gron and onto Moel Eilio (2nd time bagged) then a long descent to Bwlch Y Groes. Easy up onto Cefn-Du then back to col and descended along good tracks back to car. 968m ascent in high cloud/sunny/breezy conditions. Great views of the surrounding hills, a few people about. | DanTrig | 13/06/2022 |
| hammyhillbagger | 12/09/2021 | |
| O Llwybr Llechi Waunfawr. | sionbrit | 30/04/2021 |
| Quick walk from the car park above Waunfawr. | ruthatlast | 17/03/2021 |
| gmoseley88 | 09/08/2020 | |
| From the path by lake view hotel near Llanberis up to Bwlch y Groes and then track up to the mountain top. Then around to Mur Moch and back down to Cwm y Glo | rhiwgoch | 17/01/2020 |
| fred | 12/01/2020 | |
| From Llanberis via Foel Goch, Foel Gron and Moel Eilio | derrymark | 25/09/2019 |
| Adrian | 29/06/2019 | |
| Circular walk from Waunfawr to pleasant top with superb views but cool wind.With Peter,Lily, Oscar and Bridget. | catman | 28/05/2019 |
| With Peter,Ali,Grandma and Oscar. | lilyrosieives | 28/05/2019 |
| With Bridget,Peter,Lily and Catman. | oscarrosie | 28/05/2019 |
| With Lily,Oscar,Peter and Catman. | rosiebridge | 28/05/2019 |
| Craig Fach, Snowdon, Foel Goch, Foel Gron, Moel Eilio, Cefn-du | keithouk | 28/04/2019 |
| S4m498 | 20/04/2019 | |
| Andy West | 12/04/2019 | |
| With Jenx and Bryher up from Bryn Gloch, following path all way to the Bwylch. Last time here on the Snowdon marathon. Onto summit and trig. Back leisurely through Waun Fawr on good lanes and paths to the Brewpub by railway | nordicstar | 08/04/2019 |
| Good circular walk from campsite at Waunfawr | jenx | 08/04/2019 |
| kev65 | 21/03/2019 | |
| Walk up from Llanberis and run down through the quarries. | Claireb | 13/03/2019 |
| https://www.strava.com/activities/4272106845 | Sleepwa1ker | 03/02/2019 |
| GordonAdshead | 10/11/2018 | |
| Lovely views over Llanberis - approached from the road to the South. | kasharic | 02/07/2018 |
| First hill of the year - and an Afon Gwyrfai completion [for two days until another Tump was added :-((] | chriswatson | 20/05/2018 |
| From the Chamois Mountaineering Club Hut to Moel Elio and down into Llanberis. | welshyboyo | 03/02/2018 |
| mrtharrison | 02/01/2018 | |
| jacobrichmond | 01/01/2018 | |
| andrew brown | 03/12/2017 | |
| Me and Alf from road/track to the south. | jrj | 18/09/2017 |
| From Llanberis. Foel Goch, Foel , Moel Eilio and Cefn-Du. Lovely weather and great views. | Alunrees33 | 24/07/2017 |
| Peter_wth | 01/07/2017 | |
| From road to SW | vegibagger | 14/06/2017 |
| Tracey & I Walked from Brenteg Caravan park to Llanbris over Cefn-du | Johnboy7 | 15/05/2017 |
| With Cabe | simon and co | 13/04/2017 |
| From south west. Cloud coming down over the mountains. Bah. | Wycombe Wanderer | 06/04/2017 |
| Went up from Llanberis YHA with Mart after a day doing ML steep ground security training. Great views out to the coast. | John Eley | 01/04/2017 |
| From car park towards end of b-road, following path not marked on map | JamesD1972 | 17/10/2016 |
| Small bagging day in the rain after the previous days exertions 1/9 (Cefn Ddu/Moel Tryfan/Mynydd y Cwm/Cefn yr Ogof/Moelfree Isaf/Moel Fodiar/Moel Tywysog/Mynydd Tryfan/Pen-y-Coed) | Fergalh | 16/10/2016 |
| Dusty | 29/09/2016 | |
| Easy from car park at end of minor road from Waunfawr - carry on along track and turn steeply left on left hand track at fork then faint path which becomes clearer breaks off to right - not on map. No views today | Mark Sims | 17/06/2016 |
| TREBORK | 25/05/2016 |