Hill number:2131
Height:540.5m / 1773ft
Section:30E: Bala to Welshpool
Col:320m  SJ 0415 2167  
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GPS Data
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Entry no.Date recordedGrid Ref.Feature / Observations / SurveyRecorded byStatusSubpointLatest review
4209022/02/2024SJ 05496 21176  F: ground 7m WSW of trig point
O: ground 10m WSW is of similar height
-857805/04/2009SJ 05502 21177  F: ground within 2m of trig point
O: ground 15m WSW just lower
S: Abney level
-857908/12/2003SJ 05503 21181  F: ground within 2m of trig point
O: ground 15m WSW just lower
S: Abney level
-858030/08/2011SJ 05502 21177  F: ground within 2m of trig point
O: ground 15m WSW just lower
S: Abney level
-858121/10/2011SJ 05505 21180  F: ground within 2m of trig point
O: ground 15m WSW just lower
S: Abney level
-858225/02/2012SJ 05504 21179  F: ground within 2m of trig point
O: ground 15m WSW just lower
S: Abney level
2525/02/2012SJ 05504 21179  F: Ground 2 meters east of trig. GPS gave height of 543 meters.Dugswell2

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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.
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Logged Descriptions  (logged by 217 users, only the latest 50 shown - Show all)ByDate of Ascent
Ben Rinnes10/06/2024
Cwm Hirnant [Cwmwr Isaf] -Pt 354 - Rhialgwm and back. Easy paths and track up to 200m from Summit, then rough heather and tussocks. nice countryside.IanHHill20/05/2024
dave g01/05/2024
Boncyn Melyn > Rhialgwm [Rhial Gwm 10339] from GR: SJ 06007 22618ronaldo33318/02/2024
Boncyn Melyn > Rhialgwm [Rhial Gwm 10339] from GR: SJ 06007 22618Hippster18/02/2024
Parking on S verge 100m W of Cefn, SJ056225. Vehicle tx to end of forest at SJ0545821579, from where an ATV tk wends up to a seat memorial at SJ053213, over non-BW fence here, then exasperating trackless knee deep veg, thankfully not far, to trig. There were no FPs at the trig, so needs more boots please. (NB the S side C class road, is NOT metalled E of SJ052204 and becomes deeply rutted at about SJ060209 and there is nowhere to turn around. The only parking place, is the soft ground turning point at the end of the tarmac, SJ052204, so not a recommended starting point when it is so easy from the N)Isbjorn06/02/2024
Like PeterB. Route works well. Bracken deep but a trod through it. 1:25k shows a track above the wood to the summit area- which is rough but doable on the ground.Moorponder23/06/2023
Parked at the cp at lake, 4 pound for all day. Path east of summit impassable due to fallen trees and land slipStevooo10/06/2023
On cycle from Llanfyllin to Foel Cedig. Lovely spring day. Left bike on road!davechaffey12/05/2023
Same route up as Peterb, except I went via Clawdd Mawr.PeterD02/04/2023
Please follow the instructions given by Peterb. I mistakenly thought I could see signs that someone had managed a way through the fallen trees. It was purgatory and after much flailing about I managed to escape the woods and pick up the route Peterb described.KevPalmer20/02/2023
Having read the last few reports here it was with some trepidation that I decided to visit this hill today. I shouldn't have been concerned. After parking at SJ053205 it was a pleasant walk to the gate past all of the blown down trees on the above slopes. Once through the gate a second gate on the immediate left gives access to pasture. I followed this up to where the bracken was lying brown and flat having had a full winter to allow easy access, there were even sheep tracks to follow. One BWF was crossed without difficulty then another fence gave access to the hill. The heather was high but not a problem at all and once again a faint track was occasionally found. At the trig the views were fabulous. Definitely a hill for the winter.Peterb09/02/2023
Second Ascent. Parked 0524 2045 with space for a couple of cars - last section of the road past the farm is very rough. Easy flattish track up valley to end of forestry. ROW up through forestry is completely impassible with fallen trees. Above the tree line the track shown on the map is non existent. This section is very rough, initially deep bracken, then deep heather. Good view of the Berwyns from the trig.PeteF30/12/2022
Parked the car at the end of the minor road to the south 05298 20479, walked the track heading North East till I reached a gate turned left through a gate and headed up hill through the bracken where a trod has been stamped down to reach a stream and a fence, stepping over the fence I follwed the stream to above the plantation on the left, from here its a bracken/heather bash to the summit trig of Rhialgwm. Retraced my steps back to the car, Two and Three quarter mile in Two hours. (Supposed to take an hour and twenty minutes, I went this way to bypass the plantation which is completley impassable)WAYNE ROWLETT29/10/2022
Rhialgwm from the SW. A revisit to bag it as a Dewey. Having visited it previously in 2018 to bag it as a Marilyn without difficulty, I thought it would be a straightforward ascent. How wrong I was!! The RoW was impassable due to fallen trees and brambles. So, I took the alternative route through the gate and up the mown field, which only led to chest high man eating bracken. A major battle then was played out with a combination of bracken, fallen tree, and knee deep heather, at the same time as being bombarded by a swarm of man sucking flies!! Eventually the trig was reached. Determined for a better descent, I worked my way across to Clawdd Mawr, from where an easy route down grassy fields (not access land) brought me back to the forest road without further incident. Just 6km with 300m ascent taking a long and hard 2 hours! Not coming here again!silverwolf_alan06/08/2022
From Cefyn, up forestry track then lots of heather bashing to summit following SW side of forest / fence. Should have come back the same way but tried to go back to the stream - too much bracken, avoid!twg2724/06/2022
From minor road to SW. Drove to and parked at Y junction where PFP goes R past a barrier. No barrier on road, which continues rough but driveable. Marked PFP up through forest is blocked by very extensive wind-throw, so as JulieB, climb up field beyond the gate, across stream and overgrown grassy track to summit. May be easier to climb from N is summer due to bracken in field beyond gate.Minto29/05/2022
From road to the north, parking opposite Foel-newydd. Forest track then over gate into field and followed forest edge to the open fellside. Rough heather to summit. Solo. I then followed forest edge to Clawd Mawr.Dangerous Dave26/05/2022
From north near Cefn, could have driven up forestry track to high parking area since gates wedged open.. an old fella was sitting in his car up there. Followed track to col, detour to Hill fort ditch, slong east ridge then descent north down steep tussocky slope back to main track. Superb viewsNick Canute05/03/2022
SOTA (amateur radio) activation done and qualifiedGW4BML04/01/2022
From end of minor road to the West (room for about 3 cars max) 1km along track to gate where others have parked. Ignore PROW up left of river as many fallen trees. Go through gate then left through next gate. Head up hill through bracken (easy at this time if year) to bwf. Over bwf picked up contouring path to col above steep bit of river. Over stream and pick up remnants of a track/animal path to summit. Returned same route. 3.3miles 3hr 32 walking time. Met KeithbytheC just before summit.JulieB29/12/2021
From Clawdd Mawr. Descent by fence ok, then rough going until near top. Returned to col and descended se on brackeny slopes of Clawdd Mawr. KeithByTheC29/12/2021
park 0633 2100 track from west just drivable used row path visible then when out of plantation parhs come and go however visible path when on ridge take care with ruts in 'track' whch you cant see in dense trashunderhill23/09/2021
Parked on minor road to north nr Cefn, followed forestry track to south of Boncyn Melyn then short but rough going ascent to summit. Splendid views. Rough and later boggy descent NEwards to stile on edge of forest from where track is picked up again. Track shown on OS south of trig appears none existent.steve_a04/08/2021
From the south east. Marked path looked overgrown so I ascended into the field on the east side of the stream. The bracken got taller and taller, and the ravine was deep with bad ground higher up. Returned on marked path, overgrown with brambles but preferable to head high bracken.Topographer5716/07/2021
For the 4th succesive day, I went up a hill on the same day as Topographer57. From the good parking space at 053204. Abandoned road then marked RoW- it is possible to follow to just S of HP but expect the fight (I could have done with orienteering gear) described by elizyanne and ger. Should have done it in April (but covid lockdowns then) when less bracken etc. A 3-day blitz-bag of 7 neglected Ma, saw no-one on them in fine, warm weather. This one had limited views of Snowdonia but opened up to Shrops and Herefords hills.pwheeler16/07/2021
Parked at track junction by cattle grid, 063 210. back along track for approx 100yds to PRoW and up.CJM18/09/2020
A shortish out and back from the end of the minor road.rhalstead12/09/2020
From the good parking at 095230 to the East. Easily on forest roads and farm tracks to the heather and bracken Even here there are paths to follow all the way to the summitclimbingkershaw24/08/2020
Barry Smith13/07/2020
Parked at 053204. Easy enough path then tracks through Heather. Windy.NormanW12/03/2020
From end of tarmac, up through forest and rough ground to summit.richardrosser15/10/2019
Alan Caine05/08/2019
After coffee and cake at the Vyrnwy Dam VC. As others followed forest track after the end of the yellow road from the west. Parked at junction (SJ 063210) beyond path start. Path up to top of woods ok. Then it was very overgrown across the hill to the summit. With elizzyanne. Returned same wayGmacT01/08/2019
Path deteriorates as you go up to the stage of battling through heather, bracken and tussocks.Blessed is the view of the trig point when you start to lose the will to live in the heat!. Hill number 500 for me!!!elizyanne01/08/2019
From E. Good parking at road end 095 230. With Clawdd MawrPeteN01/08/2019
As others followed forest track after the end of road..with care... parked at cattle grid beyond path start so took the open slope out of the wood with is overgrown with bracken at the upper section. Returned via the overgrown but much better path in the woods. 3/4 evening walkN.Morters10/07/2019
A proper mini-mountain, with forest, streams, and open hillside - a great reminder of why we do the Marilyns. Great views on a fine spring day. Plenty of heather too!huwthomas24/02/2019