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Name:Tre'r Ceiri
Hill number:14347
Height:485.3m / 1592ft
Parent (Ma):1951  Yr Eifl
RHB Section:30A: Anglesey and the Lleyn Peninsula
County/UA:Gwynedd (CoU)
Catchment:Erch, Catchment Boundaries
Watershed:Cardigan Bay
Class:Tump (400-499m)
Grid ref:SH 37442 44726
Summit feature:no feature: highest natural ground
Col:419m  SH371447  
OS map sheet(s):(1:50k) 123
(1:25k) 253 254
Survey:Leica NA730/Leica GS15/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 97 users, only the latest 50 shown - Show all)ByDate of Ascent
Social run of the Tri Chopa route in reverse. Interesting and well-preserved hill fort.Claireb 09/04/2019
Run over Yr EiflS4m49809/04/2019
CMC walkgreenways01/12/2018
Brilliant hill with the best hill fort ever, even in wind and rain. Space for one car just at junction to south for ROW .Mark Sims29/11/2018
Parked at 37894 44229 in a layby. Up the fp. There was low cloud and strong winds and I missed the right turn but it is there - a narrow path more or less paved with rocks. Wondeful summit area. The board at the bottom says that it is one of the best preserved hillforts in Britain and I would agree.clivevilla14/11/2018
beautiful daydeb.thompson20/10/2018
Revisit with Peterborough MC friends Lies, Melisa and Pawel, on a day when bigger hills rained off, round of the 3 Rivals from car park to SW. Impressed by the hillfort.RHW17/12/2017
With Trefor. A spectacular hill fort and well worth a visit. Visited after Yr Enlli north top and main summit. On to climb the Gyrn Ddu summits after.mike.hoult07/04/2017
Traverse from B4417-Tre'r Ceiri (outstanding hill fort)-Yr Eifl- Treforbenalder28417/10/2016
Second ascentPeteF25/09/2016
From Yr Eifl on good path. Large hill fort entered on NW side and exited at SW end. Lots of stones/rocks to plod over in very limited viz and high winds. Not the best of days, but not raining.jonglew20/08/2016
Continuation of walk from Yr Eifl. Took path east down to bwlch then trail up through fortifications to the summit - a very impressive site. To return, took path down south-west to rejoin my outward route. Solo.marktrengove11/06/2016
10/11 Lleyn Bagging day Tenth of eleven (Mynydd Anelog/Mynydd Rihw/Mynydd Cilian/Carneddol/Carn Fadryn/Garn Boduan/Carre Glefain/Yr Eifl North Top/Yr Eifl/Tre'r Ceiri/Mynydd Carnguwch)Fergalh21/05/2016
Porth-y-Nant upper car park at 353440 – East along a decent path & then NE up Llyn Coastal Path – After passing through kissing gate in wall, headed up through the ramparts to the summit of probably Britain’s best preserved Iron Age hill fort (the walls of over 150 stone huts are almost completely intact) – Continued to Yr Eifl. (JL)gerrybowes04/12/2015
Over from Eifl finding a path for some of the way up and not for other parts. Made a right mess of going back down to Trefor. There's a path marked on my map to the east of Eifl which doesn't seem to be there on the ground.Father Ted10/10/2015
With Hobbs family on birthday: car park at SH353440 - Bwlch yr Eifl - Yr Eifl N Top - Yr Eifl - Tre'r Ceiri - past Caergribin and back. Great walk and sea views. OK path between this and Yr Eifl. Fascinating ruined huts and walls on top. Did people live up here?Mark Jackson26/08/2015
On an evening walk from the summit of the B4417 roadalistairpooler24/08/2015
485mThe Grouse18/07/2015
Start ~ 366433. Climbed up to Caergribin and found a faint path that led directly to the summit. Fantastic views in all directions. Descended to the West and took in the hillfort on Tre'r Ceiri, well worth a visit. With Wombourne.steve hudson03/03/2015
As part of Llyn Coastal path tripmavero1005/06/2014
From Bwlch Nant Gwrtheyrn car park, by narrow paths through the heather. The hillfort is an impressive ancient site, much more so than tarted up 'visitor attractions' such as Caernarfon Castle and 95% of Hadrian's Wall.jim pererin23/04/2014
SH37438 44724Anton14/09/2013
From Llithfaen.mad max29/08/2013
Started out from car park on minor road from Lithfaen,..& took route alongside old wall to Caergribin outcrop,..then on up clear path to reach old hillfort site of Tre'r Ceiri. Grand views of the Lleyn,& Snowdonia from up there, Weather permitting...Set off due west for Yr Eifl after a good mooch around...Interesting place.beedeedee03/06/2013
Most recent ascent but ascended many times.smidgen26/03/2012
Parked near Llithfaen by the woods. Y Eifl North Top, Yr Eifl and Tre'r Ceiri. Got a bit lost coming off the top in fog and ended up scrambling over big boulder scree for quite some distance. Blowing a hooley but had a stop in the KISU - nice and cosy with Mark.Saggers26/11/2011
From large car park near end of minor road at SH 35289 44064. Yr Eifl N Top - Yr Eifl - Tre’r Ceiri. A fantastic half day hill walk.David Gradwell24/07/2011
Up from car park via Yr Eifl.Incredible hill fort.With Bridget and Oscar.catman02/01/2011
With Oscar and Catman.rosiebridge02/01/2011
With Bridget and Catman.oscarrosie02/01/2011
With Sue on a bracing day.Phreerunner15/11/2010
A circular walk, carrying Megs, from carpark at SH353440 incorporating the main peak and Tre'r Ceiri. The iron age stone hill fort is definately worth a visit. These hills are as good as many of the bigger hills in north Wales.Herbert Anchovy24/07/2009
From Trefor, scrambled along the coast to Nant Gwrtheryn then up to Tre'r Ceri and Yr Eifl.Jake99431/03/2005
From Trefor, including Bwlch yr Eifl and Yr EiflJamesD197209/02/2004
New Year with Jim F. From TreforRHW01/01/1999
From Llanaelhaearn along the B4417 and then the path. One of the best hill-forts there is in the country.Alan Moore12/10/1997
see my Yr Eifl log which eulogises about this summitpwheeler09/09/1997
Some time in 1990s with Dave C.ruthatlast01/01/1993
Sometime in the 1960s - in search of bilberriesruthatlastblank
Andy West25/06/2019
A Peckish02/01/2019
andrew brown17/02/2018