Yr Eifl, sometimes called the Rivals in English,[1][2][3] is a group of hills on the north coast of the Llŷn Peninsula in Gwynedd, Wales.

Yr Eifl
The Rivals
Herring Gulls on Llanddwyn Beach - geograph.org.uk - 849196.jpg
Yr Eifl from Ynys Llanddwyn
Highest point
Elevation561 m (1,841 ft)
Prominence429 m (1,407 ft)
Parent peakMoel Hebog
Isolation13.47 km (8.37 mi) Edit this on Wikidata
Language of nameWelsh
PronunciationWelsh: [əɾ ˈəivl]
LocationLlŷn Peninsula, Wales
OS gridSH364447
Topo mapOS Landranger 123

On a clear day, the views from the highest summit reach as far as the Isle of Man, the Wicklow Mountains in Ireland and the Lake District, as well as the entire sweep of Cardigan Bay.

The view of Yr Eifl is especially striking from the SW coast of Anglesey, for instance from Ynys Llanddwyn.

Ordnance Survey maps show a height of 564 metres, but a recent survey gives the height at 561 metres (1,841 feet).[4]

View NE to Trwyn y Gorlech from beneath cliffs near Penrhyn Glas

The three peaksEdit

There are three peaks:

  • Tre'r Ceiri: 485 metres (1,591 ft),
  • Garn Ganol: 561 metres (1,841 ft) and
  • Garn Fôr: 444 metres (1,457 ft).

Garn Ganol, the central summit, is the highest point on Llŷn, with an ancient cairn, and a trig point.

Across the pass "Bwlch yr Eifl", and overlooking the sea, is Garn Fôr, the northern summit. Garn Fôr is also known as Mynydd y Gwaith.[5][6] It has a microwave radio relay station on it, as well as cairns and granite quarries (which produced the material for the curling event at the 2006 Winter Olympics), and a cliff face dropping to the Irish Sea at Trwyn y Gorlech.

The third summit, Tre'r Ceiri, on the south-eastern side, is the location of an Iron Age hillfort. Its name means "settlement of the giants", from cewri, plural of cawr, giant. It is regarded as one of the best examples of a prehistoric hillfort in Europe. A path leads to the summit.


Routes lead onto the hill from the nearby villages of Llithfaen to the south, Llanaelhaearn to the east and Trefor to the north. On the western slopes of Yr Eifl, beneath Graig Ddu (a cliff on the western slope of Garn Ganol), a small valley leads down to the sea. This is Nant Gwrtheyrn ("Vortigern's Valley"), a valley with no public roads, with a former quarry village, which is now home to a Welsh language teaching centre.

Another quarry, Trefor granite quarry, can be found to the north of Garn Ganol.


  1. ^ Rogers, Carl (2008). Best Walks in North Wales. Tattenhall: Northern Eye. p. 62. ISBN 978-0-9553557-3-8.
  2. ^ Davies, John R. (2013). Primary Trigs in Wales. Lulu Press. p. 99. ISBN 978-1-291-23048-2.
  3. ^ Crump, Eryl (14 April 2017). "Walking Yr Eifl (The Rivals) in Gwynedd is the perfect Easter day out". Daily Post. Reach plc. Retrieved 11 April 2022.
  4. ^ "Yr Eifl details". hill-bagging.co.uk. Retrieved 22 September 2014.
  5. ^ "Llyn Walks, Yr Eifl, Rhiw.com". www.rhiw.com. Retrieved 1 September 2017.
  6. ^ "Walk up Yr Eifl, Mynydd Gwaith and Tre'r Ceiri from Llithfaen - Mud and Routes". Mud and Routes. 12 September 2014. Retrieved 1 September 2017.

External linksEdit

Coordinates: 52°58′29″N 4°26′17″W / 52.97462°N 4.43792°W / 52.97462; -4.43792