List of Marilyns in Wales

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This is a list of the 156 Marilyns in Wales. It was originally published in The Relative Hills of Britain by Alan Dawson,^[1] and is one of several popular lists of hills that include Wales.

In the parent column, the prominence parent is used, as opposed to any other definition of 'parent'. The prominence parent of peak A can be found by dividing the island or region in question into territories, by tracing the runoff from the key col of every peak that is higher than peak A. The parent is the peak whose territory peak A resides in.

Contents 1 North Wales 1.1 Anglesey and the Lleyn Peninsula 1.2 Northern Snowdonia 1.3 Llandudno to Wrexham 1.4 Barmouth to Betws-y-Coed and Bala 1.5 Bala to Welshpool 1.6 Dolgellau to Machynlleth 2 Mid Wales and Pembrokeshire 2.1 Aberystwyth to Welshpool 2.2 Welshpool to Hay-on-Wye 2.3 South-West Wales 3 South Wales 3.1 Llandovery to Monmouth 3.2 Carmarthen to the Vale of Neath 3.3 Neath to Chepstow 4 Notes 5 References

[edit] North Wales

[edit] Anglesey and the Lleyn Peninsula

Peak	Height (m)	Prom. (m)	Col (m)	Grid ref.	Parent
Yr Eifl	564	433	131	SH364447	Moel Hebog	Carn Fadryn
Gyrn Ddu	522	385	137	SH401467	Yr Eifl
Carn Fadryn	371	343	38	SH278351	Yr Eifl
Mynydd Rhiw	304	240	64	SH228293	Carn Fadryn
Moel-y-gest	263	236	27	SH549388	Moel Hebog
Holyhead Mountain	220	220	Sea	SH218829	none — HP Holy Island
Mynydd Bodafon	178	178	Sea	SH472854	none — HP Anglesey
Garn Boduan	279	172	107	SH312393	Yr Eifl
Mynydd Enlli	167	167	Sea	SH122218	none — HP Bardsey
Carneddol	235	157	78	SH301331	Carn Fadryn

[edit] Northern Snowdonia

Peak	Height (m)	Prom. (m)	Col (m)	Grid ref.	Parent
Snowdon	1085	1038	47	SH609543	Ben Nevis	Snowdon
Carnedd Llewelyn	1064	750	314	SH683644	Snowdon
Glyder Fawr	999	643	356	SH642579	Snowdon
Moel Siabod	872	595	277	SH705546	Glyder Fawr
Moel Hebog	783	585	198	SH565469	Snowdon
Mynydd Mawr	698	462	236	SH539546	Moel Hebog
Craig Cwm Silyn	734	398	336	SH525502	Moel Hebog
Moelwyn Mawr	770	385	385	SH658448	Arenig Fawr
Creigiau Gleision	678	262	416	SH729615	Carnedd Llewelyn
Moel Eilio	726	259	467	SH555577	Snowdon
Allt-fawr	698	243	455	SH681474	Moelwyn Mawr
Y Garn	947	236	711	SH630595	Glyder Fawr	Y Lliwedd
Yr Aran	747	235	512	SH604515	Snowdon
Elidir Fawr	924	212	713	SH612613	Y Garn
Moel y Dyniewyd	382	208	174	SH612477	Allt-fawr
Trum y Ddysgl	709	204	505	SH544516	Craig Cwm Silyn
Moel-ddu	553	198	355	SH579442	Moel Hebog
Tryfan	915	188	727	SH664593	Glyder Fawr
Tal y Fan	610	186	424	SH729726	Carnedd Llewelyn
Pen Llithrig y Wrach	799	181	618	SH716623	Carnedd Llewelyn
Moel Cynghorion	674	176	498	SH586563	Snowdon
Y Lliwedd	898	154	744	SH622533	Snowdon

[edit] Llandudno to Wrexham

Peak	Height (m)	Prom. (m)	Col (m)	Grid ref.	Parent
Moel y Gamelin	577	382	195	SJ176465	Arenig Fawr	Great Orme
Moel Famau	555	272	283	SJ161626	Moel y Gamelin
Mwdwl-eithin	532	265	267	SH917540	Carnedd y Filiast
Great Orme	207	201	6	SH767833	Mwdwl-eithin
Hope Mountain	330	189	141	SJ294568	Moel y Gamelin
Moel Gyw	467	181	286	SJ171575	Moel Famau
Mynydd Rhyd ddu 1	389	165	224	SJ054477	Mwdwl-eithin
Cyrn-y-Brain	565	162	403	SJ208488	Moel y Gamelin
Penycloddiau	440	156	284	SJ127678	Moel Famau
Foel Fenlli	511	153	358	SJ164600	Moel Famau

[edit] Barmouth to Betws-y-Coed and Bala

Peak	Height (m)	Prom. (m)	Col (m)	Grid ref.	Parent
Y Llethr	756	561	195	SH661258	Moel Siabod	Arenig Fawr
Arenig Fawr	854	479	375	SH827369	Moel Siabod
Rhinog Fawr	720	363	357	SH656290	Y Llethr
Carnedd y Filiast	669	315	354	SH871445	Arenig Fawr
Y Garn	629	315	314	SH702230	Y Llethr
Rhobell Fawr	734	309	425	SH786256	Arenig Fawr
Arenig Fach	689	294	395	SH820415	Arenig Fawr
Foel Goch	611	274	337	SH953422	Carnedd y Filiast
Manod Mawr	661	266	395	SH723446	Arenig Fach
Foel Offrwm	405	236	169	SH749209	Rhobell Fawr
Moel Llyfnant	751	206	545	SH808351	Arenig Fawr
Moel Ysgyfarnogod	623	180	443	SH658345	Rhinog Fawr
Mynydd Nodol	539	168	371	SH865393	Arenig Fawr
Moelfre	589	162	427	SH626246	Y Llethr

[edit] Bala to Welshpool

Peak	Height (m)	Prom. (m)	Col (m)	Grid ref.	Parent
Aran Fawddwy	905	672	235	SH862223	Snowdon	Aran Fawddwy
Cadair Berwyn	830	344	486	SJ071323	Aran Fawddwy
Gyrn Moelfre	523	237	286	SJ184293	Cadair Berwyn
Rhialgwm	540	225	315	SJ055211	Aran Fawddwy
Glasgwm	780	213	567	SH836194	Aran Fawddwy
Cyrniau Nod	667	179	488	SH988279	Aran Fawddwy
Allt y Main	356	171	185	SJ162151	Rhialgwm
Esgeiriau Gwynion	671	166	505	SH889236	Aran Fawddwy
Y Golfa	341	165	176	SJ182070	Carnedd Wen
Mynydd-y-briw	341	165	176	SJ173260	Cadair Berwyn

[edit] Dolgellau to Machynlleth

Peak	Height (m)	Prom. (m)	Col (m)	Grid ref.	Parent
Cadair Idris	893	608	285	SH711130	Aran Fawddwy	Cadair Idris
Tarren y Gesail	667	463	204	SH710059	Aran Fawddwy
Maesglase	676	313	363	SH817150 2	Aran Fawddwy
Ffridd Cocyn	313	247	66	SH624042	Tarren y Gesail
Foel Cae'rberllan	380	211	169	SH676082	Cadair Idris
Gamallt	288	206	82	SH665067	Ffridd Cocyn
Tarrenhendre	634	199	435	SH682041	Tarren y Gesail
Mynydd Cwmcelli	469	157	312	SH804099	Maesglase
Craig y Castell 1	321	153	168	SH697161	Cadair Idris

[edit] Mid Wales and Pembrokeshire

[edit] Aberystwyth to Welshpool

Peak	Height (m)	Prom. (m)	Col (m)	Grid ref.	Parent
Plynlimon	752	524	228	SN789869	Pen y Fan	Plynlimon
Carnedd Wen	523	228	295	SH924099	Aran Fawddwy
Esgair Ddu	464	222	242	SH873106	Carnedd Wen
Drosgol	550	195	355	SN759878	Plynlimon
Stingwern Hill	358	180	178	SJ132014	Carnedd Wen
Bryn y Fan	482	177	305	SN931885	Plynlimon
Upper Park	352	174	178	SJ188052	Carnedd Wen
Bryn Amlwg	488	170	318	SN921973	Plynlimon
Banc Llechwedd-mawr	560	161	399	SN775898	Plynlimon
Disgwylfa Fawr 1	507	152	355	SN737847	Banc Llechwedd-mawr
Garreg-hir	485	151	334	SN998977	Carnedd Wen

[edit] Welshpool to Hay-on-Wye

Peak	Height (m)	Prom. (m)	Col (m)	Grid ref.	Parent
Great Rhos	660	373	287	SO182639	Plynlimon
Long Mountain	408	305	103	SJ264058	Stiperstones
Pegwn Mawr	586	300	286	SO023812	Plynlimon
Moel y Golfa	403	261	142	SJ290125	Long Mountain
Gwastedyn Hill	477	242	235	SN986661	Pegwn Mawr
Aberedw Hill	451	227	224	SO084507	Great Rhos
Rhiw Gwraidd	442	214	228	SO009633	Gwastedyn Hill
Garreg Lwyd	499	206	293	SN942733	Pegwn Mawr
Carneddau	445	206	239	SO069551	Great Rhos
Corndon Hill	513	201	312	SO306969	Stiperstones
Beacon Hill	547	174	373	SO176767	Pegwn Mawr
Caeliber Isaf	355	172	183	SO211933	Beacon Hill
Gwaunceste Hill	542	161	381	SO158555	Great Rhos
The Begwns	415	157	258	SO155444	Gwaunceste Hill
Cefn Cenarth 1	460	155	305	SN969762	Garreg Lwyd

[edit] South-West Wales

Peak	Height (m)	Prom. (m)	Col (m)	Grid ref.	Parent
Foel Cwmcerwyn	536	344	192	SN094311	Plynlimon
Drygarn Fawr	645	258	387	SN862583	Plynlimon
Mynydd Carningli	346	232	114	SN062372	Foel Cwmcerwyn
Mynydd Cynros	329	221	108	SN620326	Drygarn Fawr
Crugiau Merched	462	205	257	SN722455	Drygarn Fawr
Pen y Garn	610	193	417	SN798770	Plynlimon
Pen-crug-melyn	326	184	142	SN502285	Drygarn Fawr
Frenni Fawr	395	177	218	SN203349	Foel Cwmcerwyn
Waun Claerddu	594	168	426	SN790704	Drygarn Fawr
Rhos Ymryson	327	164	163	SN459500	Waun Claerddu
Pen y Garn-goch	487	162	325	SN884502	Drygarn Fawr
Carn Gafallt 1	466	157	309	SN940646	Drygarn Fawr
Hafod Ithel	361	155	206	SN610677	Waun Claerddu
Brandy Hill or  Middleton Hill 3	205	151	54	SN213133 or  SN146118	Foel Cwmcerwyn

[edit] South Wales

[edit] Llandovery to Monmouth

Peak	Height (m)	Prom. (m)	Col (m)	Grid ref.	Parent
Pen y Fan	886	671	215	SO012215	Snowdon	Pen y Fan
Waun Fach	811	622	189	SO215300	Pen y Fan
Fan Brycheiniog	802	423	379	SN825217	Pen y Fan
Sugar Loaf	596	413	183	SO272187	Waun Fach
Ysgyryd Fawr	486	344	142	SO331182	Sugar Loaf
Fan Fawr	734	295	439	SN969193	Pen y Fan
Mynydd Troed	609	286	323	SO165292	Waun Fach
Fan Gyhirych	725	280	445	SN880190	Fan Fawr
Graig Syfyrddin	423	235	188	SO403210	Ysgyryd Fawr
Allt yr Esgair	393	205	188	SO126243	Mynydd Troed
Mynydd Eppynt	478	199	279	SN961464	Drygarn Fawr	Sugar Loaf
Cefn yr Ystrad	617	178	439	SO086137	Pen y Fan
Fan Nedd	663	174	489	SN913184	Fan Gyhirych
Waun Rydd	769	170	599	SO062206	Pen y Fan
Myarth	292	164	128	SO170208	Allt yr Esgair
Mynydd Llangorse	515	161	354	SO159266	Mynydd Troed
Tor y Foel	551	157	394	SO114194	Cefn yr Ystrad
Bryn Arw	384	156	228	SO301206	Sugar Loaf
Black Mountain 4	703	154	549	SO255350	Waun Fach

[edit] Carmarthen to the Vale of Neath

Peak	Height (m)	Prom. (m)	Col (m)	Grid ref.	Parent
Mynydd Marchywel	418	263	155	SN768037	Fan Gyhirych
Hirfynydd	481	246	235	SN839076	Fan Gyhirych
Mynydd Sylen	284	209	75	SN515080	Fan Brycheiniog
Mynydd y Betws	373	205	168	SN665095	Fan Brycheiniog
Trichrug	415	191	224	SN698229	Fan Brycheiniog
Mynydd Allt-y-grug	338	190	148	SN750079	Fan Brycheiniog
Mynydd Uchaf	357	182	175	SN715103	Fan Brycheiniog
Mynydd Drummau	272	171	101	SN725001	Mynydd Marchywel
Mynydd Llangyndeyrn	262	170	92	SN482132	Mynydd Sylen

[edit] Neath to Chepstow

Peak	Height (m)	Prom. (m)	Col (m)	Grid ref.	Parent
Craig y Llyn	600	392	208	SN906031	Pen y Fan
Mynydd Twyn-glas	472	253	219	ST259978	Pen y Fan
Wentwood	309	240	69	ST411943	Ysgyryd Fawr
Cefn Eglwysilan	382	235	147	ST097905	Pen y Fan
Coity Mountain	578	231	347	SO231079	Pen y Fan
Foel Fynyddau	370	222	148	SS782936	Craig y Llyn
Mynydd y Lan	381	215	166	ST208923	Pen y Fan
Garth Hill	307	211	96	ST103835	Craig y Llyn
Mynydd Machen	362	185	177	ST223900	Pen y Fan
Mynydd y Glyn	377	182	195	ST031896	Craig y Llyn
Mynydd Carn-y-cefn	550	176	374	SO187084	Cefn yr Ystrad
Craig yr Allt	273	154	119	ST133850	Cefn Eglwysilan
Mynydd Dinas 1	258	152	106	SS760915	Foel Fynyddau

[edit] Notes

Note 1: Mynydd Rhyd ddu, Craig y Castell, Disgwylfa Fawr, Cefn Cenarth, Carn Gafallt and Mynydd Dinas have all been discovered to be Marilyns since the publication of The Relative Hills of Britain and are therefore not listed in the book.^[2]

Note 2: Traditionally, the top of Maen Du (674 m at SH823152) was regarded as Maesglase's summit. However, more recent surveys suggest that the top of Craig Rhiw-erch (c 676 m at SH817150, some 600 m to the west) is higher.^[3]

Note 3: Brandy Hill and Middleton Hill both have a height of 205 m and are separated by a c 40 m drop. They are collectively separated from Foel Cwmcerwyn (their parent) by a 151 m drop making one of them a Marilyn. However, without more accurate heights, it is impossible to say which is the Marilyn, making them an example of a twin peak.

Note 4: The Black Mountain straddles the English–Welsh border, and is therefore included on the English list too.

[edit] References

1. ^ Dawson, Alan (1992). The Relative Hills of Britain. Milnthorpe, Cumbria: Cicerone Press. ISBN 1-85284-068-4. 
2. ^ Dawson, Alan (2006). Update to The Relative Hills of Britain. Retrieved on 2006-10-06.
3. ^ Dawson, Alan (2000). RHB Update. Retrieved on 2006-10-06.

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