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Name:Holyhead Mountain [Mynydd Twr]
Hill number:1959
Height:220m / 722ft
RHB Section:30A: Anglesey and the Lleyn Peninsula
County/UA:Anglesey [Sir Fon]
County (CoH):Anglesey [Sir Fon] (CoH)
Island:Holy Island (Anglesey)
Class:Marilyn, Hump, Tump (200-299m), Historic County Top, Current County/UA Top,
SIB, Clem
(Ma,Hu,Tu,2,CoH,CoU,SIB,Cm)
Grid ref:SH 21859 82948
Summit feature:trig point on circular plinth
Drop:220m
Col:Sea
OS map sheet(s):(1:50k) 114
(1:25k) 262
Observations:rock by plinth is highest visible point but higher ground may be hidden under plinth
Survey:obvious summit
Change log:show changes for this hill entry
GPS data:show GPS entries for this hill
Notes:
  • Anglesey [Sir Fon] historic county top
  • Anglesey [Sir Fon] 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.  Please quote the hill number and hill name.

Logged Descriptions  (logged by 620 users, only the latest 50 shown - Show all)ByDate of Ascent
From South Stack. Yellow lines force you to use the P&D CPs. The P&D machines are liable to switch on whilst you are away from your vehicle. Nearest problem free, free, parking is at SH217813Isbjorn30/01/2024
Up from car park to east with Twiggy. In cloud. Had trouble finding way down. In hindsight, our intended direction wasn't too clever.desperate dan07/10/2023
After bagging Yr Arwydd, I parked at SH 2213 8213. Easy route finding straight up, but problematic finding a route down the lower section through the hawthorn bushes and bramble. Avoid the Quarry area, head for the Reservoir on the descent.chillyman820/09/2023
A quick diversion off the coastal path to the trig point at the top.PhilipChaston08/09/2023
Climbed Holyhead Mountain for the second time, this time with my Nephew. Made our way up from the Breakwater Country Park carpark. Spent half an hour or so at the summit watching the ferries dock in the harbour below.cactus_chris16/08/2023
https://strava.app.link/l9cjFfA6CGbJohn09/08/2023
Parked at small car park on right from entry road to south stack, before you turn right across the bridge. Through barrier to right and up through small path through heather and gorse. Steepish and craggy but not not too challenging. Great views and a bench at the top. Back down same way but visited the quarry on the way back down.Tribal2er24/07/2023
Nice steady work, you have to pay a small fee to park.Brian Chambers22/07/2023
Parked in the RSPB The Range car park. Pleasant circuit around Coastal Path and up to summit, then off North East path and then down to North Stack then paths back to cafe for an ice cream and along road to car. 8.6 mile leisurely circuit.JulieB07/06/2023
Ran from Holyhead to South Stack - lighthouse not open - then along the coastal path and up to the trig at the summit for a repeat visit, 15 years later.madaddo07/05/2023
On the coastal path from Trearddur BayLancylass04/05/2023
After parking at the RSPB carpark at South Stack we used some of the myriad of footpaths up to the summit. A wonderful small hill with fabulous views.Peterb05/02/2023
with YFabioski26/01/2023
Holyhead Mountain from South Stack.alunrees4017/12/2022
With Yeltzbagger. Overcast and windy walked down steps to South Stack but lighthouse closed.Stevie n Tay21/09/2022
Circle from South Stack carpark.catie12/09/2022
Detour from running the coast path with Pauline … what a lovely baby mountain .. rocky and heather in flower reminded us of the Rhinogsmilejunkie05/09/2022
Cycled across Yns Mon from Bangor checked into a rather grotty hotel (avoid the Boatshed!) then cycled up to the base of the walk at Pentre Palla. Good path up in the late afternoon sunshine but somehow managed to find myself stuck in a field of bracken and ended up with scratched shins! Hardly a soul about.pclyndes01/09/2022
From South Stacksturuss29/08/2022
From S. Stack with the kids. Great views.SlowOl03/08/2022
Here for beer with the sunset, after a good day on the hills, great sea views.Stevooo17/07/2022
From country park car park. Great views. Lots of rock climbers about.twg2725/06/2022
From South Stack car park. Foggy at car park, but clear on top.vuirich03/05/2022
Easy walk on good paths from South Stack car park. Solo.Dangerous Dave21/04/2022
From Country Park CP, with K.IanHHill19/04/2022
First successful attempt at climbing Holyhead Mountain. Route taken from Breakwater Country Park.cactus_chris19/04/2022
from south stack cpunderhill25/03/2022
2 of 3 on 5.7 mile hike starting at south stack car park. From the lighthouse another fine view on another county top. Marilyn no. 57The-Z-Man15/01/2022
Parked in the RSPB car park followed coastal path to elin's tower followed the sign-posted path to the summit. Great views of Holyhead from the top.Tony Hartry26/09/2021
Walked up from South stack. Followed footpath to coast path and then followed the posted markers up.davert12324/08/2021
Reached by Bernard and Sarah with a small detour from the coastal path. Enjoyed watching the Choughs at South StackBernard27/07/2021
Approached from the country park car park. Wonderful views from the top, paths aren't quite clear but you'll get there eventually - it's not huge!cjwilliams17/07/2021
Parked at RSPB car park. Walked down to South Stack then across well marked paths and up to the summit from the Northern end. Descended to the South and back to the car park. Great views of Holyhead. Hot, clear day.Argentum6608/07/2021
Park in designated parking place on South Stack. Beautiful views. There's obvious paths to the summit. There's a trig point at the top. You can do this with ropes if you have the equipment.Skarletk13/06/2021
Dusk walk. Great views.gettingonabit18/05/2021
Up from South Stack Lighthouse with Charlotte. Good visibility but very windy - ferry to Ireland facing lots of waves.andrewcoles30/07/2020
From local road to east. Up path through old fields, mist covering top, but fine views till then. Visit to south stack afterwardsN.Morters22/07/2020
Holyhead Mountain [S1633] from GR: SH 20845 82046ronaldo33319/07/2020
Holyhead Mountain [S1633] from GR: SH 20845 82046Hippster19/07/2020
TD & CThis Dog24/08/2019
Parked in the South Stack car park. Followed the tracks across the access land to the impressive summit of Holyhead Mountain, then back along the coast path, going as far down the steps to the lighthouse that was permitted. A round trip of 8km taking 2h 40m.silveracorn_alan18/08/2019
3rd and final tump of a circular from Breakwater country park with Lesley. I veered off to climb Tre-Wilmot then we did South stack, using coastal path before i veered off on a fairly good path to the top. Really wild looking rocky terrain. Descent North to reach footpath and Lesley. We took a more direct route back to the start. Next: Rhoscolyn and Hirfron...Dazingdale16/07/2019
Easy walk up from South Stack car park. Low cloud (fog horn sounding) so no view possible.Eliza10011/07/2019
After the lighthouse directly to the summit then back to car at RSPB car park near new visitor centre being created.NormanW10/07/2019
With all the family early in our Anglesey holiday. Cal says that he enjoyed the wildlife 'and the submarines'(!) Started from the breakwater country park, walked over to South Stack.Ham and Skate14/04/2019
Fine evening walk from South Stack. We had the mountain to ourselves.DanMaisieBex12/04/2019
S Stack with PM, then onto Holyhead Mountain. Adrian’s Puffin Island trip cancelled due unfavourable winds.CJM07/04/2019
With Jenx and Bryher from South Stack. Glorious day if cool easterly breezenordicstar07/04/2019
Great to revisit on a much better day. An impressive rocky hill.jenx07/04/2019
With AngelaCousin Jack31/03/2019