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Name:Craig y Llyn (boundary)
Hill number:5477
Height:589m / 1932ft
Parent (Ma):2288  Craig y Llyn
RHB Section:32C: Neath to Chepstow
County/UA:Rhondda Cynon Taff (CoU), Neath Port Talbot (CoU)
County (CoA):Mid Glamorgan (CoA)
Catchment:Catchment Boundaries, Neath, Taff
Watershed:Severn Estuary, Swansea Bay
Class:Current County/UA Top, Administrative County Top
Grid ref:SN 90977 03168
Summit feature:path/firebreak intersection, 250m E of Craig y Llyn summit
Col:589m  SN909031  
OS map sheet(s):(1:50k) 170
(1:25k) 166W
Observations:visibility hampered by trees
Survey:Abney level
Change log:show changes for this hill entry
GPS data:show GPS entries for this hill
  • Mid Glamorgan (1974) administrative county top
  • Rhondda Cynon Taff 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, and mention the hill number and hill name.

Logged Descriptions  (logged by 129 users, only the latest 50 shown - Show all)ByDate of Ascent
Third top of the day. Not the most enjoyable, with rutted path early in the ascent. Interesting to see what had been the last Welsh deep coal mine down below (closed years ago). Achieved the top at 5.40 before descent the same way. Good views of several other Welsh tops in the distance, including others Id walked earlier in the day.acolling21/08/2019
With E. From Hendre'r Mynydd Car Park, N along A4061 to wind farm entrance. Easy walk along forest roads (national cycle route 47) to trig point. Then down forest ride to Craig y Llyn boundary. Reminded me of my orienteering days.Beeliner16/07/2019
With CPgarth8716/06/2019
Final peak of the day w/ Pete + Joe, had a picnic and played some cards at toppenbet24/02/2019
Parked in a forestry carpark and followed the forest tracks up. easy walk but was soaked by the end and a trig summit for second welsh county topjmistry8620/01/2018
With Craig y llynFred Windsor25/10/2017
Ascended from the viewpoint car park on the A4061. Several detours to the edge of the scarp above Llyn Fawr for photos.DanMaisieBex14/10/2017
After visiting the trig, taking a parallel path to the one taken on the way up. One of those rather unsatisfactory county tops that isn't on a summit. With X and M in rather damp conditions.Herbert Anchovy04/09/2017
Three mile county top wqalk from the parking area on the A4061 between Hirwaun and Treherbert reached after finding the trig point for West Glamorgans county top.WAYNE ROWLETT18/08/2017
With: hb; Passed on walk up to trigpoint.Ian Baines28/08/2016
Craig y Llyn from SN 92689 03092ronaldo33304/06/2016
After Craig y Llyn. Return to the picnic site on A4061 much more pleasant along the Coed Morgannwg Way. Only one f in Taf btw.Newton Maximus08/05/2016
Bonus bag on way back to viewing point on A4061 from Craig-y-LlynSteveSmith12/04/2016
With SteveGinaSmith12/04/2016
Boundary point visited whilst returning from top of Craig y LlynCas-gwent15/03/2016
With Craig y Llyn from Eastnordicstar18/11/2015
With Chris while staying near Ammanfordmagirob15/10/2015
on way to Craig Y Llyn propermapple01/09/2015
See 2288Ramblingpaul28/07/2015
Walked up from the layby. 65 minutes return. Major forestry work going on but can access from the marilyn side which is west. With GB.bolton14/07/2015
Parked in large layby on A4061 at 927031 Up path alongside the road & then west along waymarked track From track took path north for about 100m to Top. (PM)gerrybowes14/07/2015
9/9 last one of long day just a short distance from Crig Y Lan wonderful views of the beacons from thereFergalh07/12/2014
Craig y llyn, Boundary and Hirwaun Common from main road layby.rhalstead11/01/2014
walked up from main road up forestry track great views of most summits of brecon beaconsrussf6906/09/2013
GMC meetmike.hoult28/07/2013
Not very exciting top, but views a short distance to the north certainly are! Easy to find top at intersection of paths/firebreaks, especially if do the main summit trig first. Did a round walk on a sunny day and only met two people.Hillsidenick26/07/2013
Quick stop on the way to the main summit - in the trees, restricting visibility. Highly recommend the "On the edge" path running around the top of the escarpment above Llyn Fach. Wonderful views from there.thesweetcheat31/05/2013
Picked up this point whilst doing the main County Top / Marilyn of Craig y Llyn.jonglew16/02/2013
Completed Easter 2012 by Steve Readingmorrislube08/04/2012
Me meg and JamesRoland Brooks29/10/2010
Went to area given by RHB as the summit, thought it all very debatable.Aye Jimmy04/09/2010
No feature, Route: Pontwalby - Cwm Gwrelych - Opencast - Llyn Fach - Craig Y Llyn. Path on OS no longer exists across opencast, very difficult terrain until Llyn Fach. Not recommended.Chris Williams22/02/2009
On way to triangulation point.Dusty29/01/2009
As the nearby Marilyn. Top seems near enough the new post.destaylor21/10/2008
Parked at Forest access point, tree felling in operation even on a Saturday morning. Route finding easy + bagged some county tops.Dugswell220/09/2008
Most uninspiring!!signyred18/07/2006
En route to trigRhayader_wander15/11/2005
At path crossroads, 250m E of Craig y Llyn summitwebmaster02/04/2005
There should be a law that county boundaries must run over watersheds to avoid stupid "halfway up" tops like this! It gives bagging a bad name!wheresthepath02/10/2004
Not sure of exact date in August.peter.stone01/08/2003
After reaching the Matilyn top took the next firebreak to the east to reach the top of Rhondda, Cynon & Taff.garyhoney23/11/2002
Passed this point on the way up Craig y LlynChinnockC24/10/2002
Visited on MTB orienteering event out of Resolven where County Boundary had a control point. Also went to trig pointPeterD19/06/1999
Solo run. Done with West Glamorgan CT.mikejacobs14/11/1998
tracks trashed by timber extraction, summit surrounded by trees. pass to E (space for 1 car) RHW18/04/1998
Weekend S Wales trip (after HK Bristol visit) with Rob Small. Finished my Welsh Bridges later the same day after doing this County TopChris Pearson06/07/1997