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Name:Pen Allt-mawr
Hill number:2239
Height:719.6m / 2361ft
Parent (Ma):2229  Waun Fach
RHB Section:32A: Llandovery to Monmouth
Nuttall/Wainwright area:Black Mountains
County/UA:Powys
Catchment:Usk
Class:Hump, Simm, Hewitt, Nuttall, Buxton & Lewis,
Bridge, Clem
(Hu,Tu,Sim,Hew,N,BL,Bg,Cm)
Grid ref:SO 20690 24307
Summit feature:no feature 30m S of trig point
Drop:103.5m
Col:616.1m  SO 2044 2861  
OS map sheet(s):(1:50k) 161
(1:25k) OL13N OL13S
Observations:ground higher than base of trig point at SO 20691 24334
Survey:Abney level
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 653 users, only the latest 50 shown - Show all)ByDate of Ascent
Anti clockwise over 3 Simms and a sub from Nuttalls parking spot at hairpin bend.NormanW25/11/2023
Pen Allt-mawr - Pen Twyn Glas - Mynedd Llysiau - Waun Fach - Pen y Gadair Fawr - Pen Twyn Mawr - Pen Cerrig-calch from Cwmdu. 19 milesGary Heath25/07/2023
From crickhowellholtsd28/05/2023
https://www.strava.com/activities/9149261907rhif727/05/2023
Stone shelter at summit. Trig point broken off its base but stood upVulcan02/03/2023
Waun Fach horseshoe following Nuttall route 12.2. Pen Cerrig-calch, Pen Allt-mawr, Pen Twyn Glas, Mynydd Llysiau, Waun Fach, Pen y Gadair Fawr and Pen Twyn Mawr. Enjoyable solo walk on a clear sunny but cold day. 6.5 hoursrichard6902/01/2023
Peak - 719.6m. Hike Stats: 17km; 5 hours; 810m ascent. Looping hike from Crickhowell including Pen Cerrig-calch and Pen Allt-mawr.complicatedaussie29/10/2022
Sadly the trig point was lying flat on its side for this one!Steep slope to Nfreethehilltops24/10/2022
Twmpa, Rhos Dirion, Waun Fach, Mynydd Llysiau, Pen Twyn Glas, Pen Allt-mawr, Pen Cerrig-calchkeithouk14/08/2022
7.9 mile circular from parking space in road corner at Cwm Banw. Followed good path not marked on the map from road corner straight up through field across road and up by woodland to access land. We followed the access land boundary along until meeting the Beacons Way. We then ascended easy paths up to Pen Cerrig-Calch and then followed gentle ridge up to Pen Allt-Mawr. First time I have seen the trig toppled over. It was standing when I was up here last in 2016. From here we followed easy paths onto Pen Twyn Glas descending the Tal Trwynau ridge down to fields and just before reaching farm we followed a signed path (not marked on maps) heading down to the road bend where we parked. All hills bagged for the 5th time. 588m ascent. Saw only 3 people all day as I think the 34c forecast put most people off. Clear and sunny with a surprisingly stiff breeze. With Marco.DanTrig13/08/2022
Cwm Banw car park > Pen Cerrig-calch > Pen Allt-mawr > Pen Twyn Glas > Tal Trwynau > Car Park.Winterfloodian31/07/2022
Part of the Black Dragon Challenge 2022lboutside23/04/2022
Waun Fach horseshoeBarns15018/04/2022
www.exploringmidwales.co.uk Cambrian Way Day 5.Rob Rees05/04/2022
Parked on a residential road in Crickhowell and then hiked up to Table Mountain, Pen Cerrig-calch and then Pen Allt-mawr.SootAndShale02/04/2022
From Cwmdu via Mynydd Troedtwg2721/03/2022
Parked on the minor road to the East of Pen Cerrig-calch GR23456 22893 where there is a small parking area then walked back up the road to meet the Beacons way for a Seventeen mile Nuttall walk. Visiting the summits of Pen Cerrig-calch, Pen Allt- mawr,Pen Twyn Glas,Mynydd Llysiau, Waun Fach, Pen y Gadair Fawr and PenTwyn Mawr taking just under Seven hours.WAYNE ROWLETT06/03/2022
HP in heather and bilberry just off path and south of sadly toppled trig/ cairn. Foggy and windy though cleared on descent. En route to Waun Fach with group, final Welsh Marilyn.Denise 08/02/2022
Circular of Pen Cerrig-calch, Pen Allt-mawr,Pen Twyn Glas,Mynydd Llysiau, Waun Fach, Pen y Gadair Fawr and Pen Twyn Mawr.Arbie08/02/2022
From Pen Cerrig-calch, on to Pen Twyn Glas.Wycombe Wanderer12/01/2022
Circular hike starting from car park on Greenhill Way at Crickhowell town centre to revisit Crug Hywel-Trwyn Ysgwrfa-Pen Cerrig-Calch- Pen Allt Mawr-Pen Twyn Glas-Pen Gloch-y-Pibwr and the Darren, before following the Beacons Way to Foxhall-Twyn-A40 to car park. Circular hike starting from car park on Greenhill Way at Crickhowell town centre to revisit Crug Hywel-Trwyn Ysgwrfa-Pen Cerrig-Calch- Pen Allt Mawr-Pen Twyn Glas-Pen Gloch-y-Pibwr and the Darren, before following the Beacons Way to Foxhall-Twyn-A40 to car park. Total distance: 13.1 milesmanilena21/11/2021
Nuttals route.IanHHill03/10/2021
Black Mountains horseshoe run.Dave Ing11/09/2021
ellieMunroist393503/09/2021
20 mile Waun Fach round, parked at Pont Cadwgan with no issue, started at Crug Mawr and walked anticlockwise along the the obvious route. A tough route but rewarding, and definitely better this way around I think!JazDisney12/06/2021
Circuit inc Table Mountain, Mynydd Llysiau, Waun FachAjm031025/04/2021
Llanbedr Horseshoe Route.sionbrit11/04/2021
Part of a long circular walk from Llanbedr. Beautiful day out in the hills!Gerry the Ranger04/04/2021
MDC run Black Mountains fell race routemilejunkie28/11/2020
Dropped by taxi at junction near Cwm Farm. A round of the western Black Mountains then down to campsite at Crickhowell. Started misty then cleared to beautiful sunshine. With B and R.jenx09/09/2020
Very hot day but excellent walking up here.Alex C07/08/2020
Long circular walk from Llanbedr, good views all round, Bog underfoot on the last summit. (After staying near the forest of dean, in October Half term)Joel45128/10/2019
18.6 miles, 2834ft Table Mountain Walk.stephenbuda24/08/2019
As part of Beacons 100. Apocalyptic weather.Jim T09/08/2019
I left the A479 at Waun Fach hamlet and parked near Blaunea-Fry, just short the bridleway approaching Waun Fach mountain from the south-west. The place to park is on a corner near a cattle grid, but not please obstructing the adjacent heavy machinery gate which the farmer needs to use. Waun Fach took me about an hour and 45 mins without rushing, plenty of photos. The top is unremarkable but gave stunning panoramic views. I would love to know what distant mountains I could see. Revived I rundled back down to the cairn I passed at the top of bridleway and on to path up Mynydd Llysiau and on to bag Pen Allt-mawr. At the boundary stones before Pen Twyn Glas stand two grave 19c grave stones. I couldn’t make out the inscription, but imagine they may have been a loving couple. On nearing the summit of Pen Allt-mawr follow the less steep path to the right, as this is easier than blundering straight up the crags adding to the erosion. Again more great views, especially of Mynydd Troed and the Pete West21/06/2019
6th of 7 for day on Black Dragon Challenge out of Crickhowell. After a route via Mynydd Troed and Mynydd Langorse the climb from Pentre in valley to W was as hard as anything in S Wales. Cracking climb.richardrosser06/04/2019
Llanbedr horseshoeRedAndy5402/04/2019
With Jonny and Smivvy.zaul_uk10/02/2019
Ascent with my son of Pen Cerrig-calch (701m), Pen Allt-mawr (719m), Pen Twyn Glas (646m), from Llanbedr. Cloudy day, little breeze, some patched of hill fog. ~13Km, with 620m ascent.VirtualMountain27/12/2018
Crickhowell - Pen Cerrig-calch - Pen Allt-mawr - Pen Twyn Glas - Mynydd Llysiau - Waun Fach - Pen y Gadair Fawr - Pen Twyn Mawr - Coed Cefn - Crickhowell.Mark Jackson25/10/2018
Solo. From Pen Cerrig-calch.Dangerous Dave16/09/2018
With JackW. Waun Fach Horseshoe CW. From Llanbedr. masmith28/01/2018
First hill climbed on a walk from the Green Man festival after walking around the edge of the valley.Cap_Thunderbolt15/08/2017
Nick and Julesrockwarrior23/07/2017
Circular hike starting from layby at Llanbedr to tick off Crug Hywel-Trwyn Ysgwrfa-Pen Cerrig-Calch-Pen Allt Mawr-Pen Twyn Glas-Mynydd Lysiau-Waun Fach-Pen y Gadair Fawr-Pen Twyn Mawr-Crug Mawrmanilena24/06/2017
Included in circular walk from bridge near Neuadd Farm, GR 234229, start with Pen Cerrig Calch, finish with Pen Twyn Mawr and down Pen Gwyllt Meirch and round to bridge start point. Once you have slogged and reached Pen Cerrig Calch summit you have basically gained the height. Mostly a leisurely stroll from then on. Start 10.30am finish 5.30pm. Can easily be done in less.Dewi Prysor13/05/2017
from crickhowell via table mountaindavie07/05/2017
Linear walk from Cwmfforest 9mTaz3802/05/2017
Paul and Katesenrab01/05/2017
With Ken, Rita, Karen, Nathan and Bryan.Aimless Rambler15/04/2017