Yr Arddu

Hill, Mountain in Merionethshire

Wales

Yr Arddu

Landscape North of Croesor Yr Arddu in the background.
Landscape North of Croesor Credit: Chris Andrews

Yr Arddu, also known as Arddu or Moel Arddu, is a prominent hill and mountain located in Merionethshire, in northwestern Wales. With an elevation of 486 meters (1,594 feet), it stands as one of the highest peaks in the Moelwynion mountain range. Yr Arddu is situated approximately 4 kilometers southwest of Beddgelert, a picturesque village in the Snowdonia National Park.

The name "Yr Arddu" translates to "The Dark One" in Welsh, and it is fitting as the mountain's appearance is characterized by its dark and rugged nature. Composed mainly of volcanic rocks, Yr Arddu presents steep and craggy slopes, often shrouded in mist, giving it an eerie and mysterious atmosphere.

The mountain offers breathtaking panoramic views of the surrounding landscape, including the picturesque Glaslyn Valley, the Nantlle Ridge, and the imposing Snowdon, Wales' highest peak. It is a popular destination for hikers and mountaineers, who can access Yr Arddu from various starting points, including Beddgelert and Rhyd Ddu.

Yr Arddu has a rich history, with evidence of human activity dating back thousands of years. Archaeological discoveries in the area have revealed ancient settlements and burial sites, indicating that the mountain held significance for past communities.

In addition to its natural beauty and historical importance, Yr Arddu is home to a diverse array of flora and fauna. The mountain's slopes are adorned with heather, grasses, and mosses, while its crags provide habitat for various bird species, such as peregrine falcons and ravens.

Overall, Yr Arddu's imposing presence, dramatic landscape, and rich history make it a captivating destination for outdoor enthusiasts and those seeking to explore the beauty of the Welsh countryside.

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Yr Arddu Images

Images are sourced within 2km of 52.994973/-4.0461852 or Grid Reference SH6246. Thanks to Geograph Open Source API. All images are credited.

Landscape North of Croesor Yr Arddu in the background.
Landscape North of Croesor
Yr Arddu in the background.
Croesor cottages Moelwyn Bach looms in the distance.
Croesor cottages
Moelwyn Bach looms in the distance.
Former chapel, Croesor Now in residential use.   If anybody knows the chapel denomination, I will amend the caption.   The steeply sloping road to the left leads towards the peak of Cnicht.
Former chapel, Croesor
Now in residential use. If anybody knows the chapel denomination, I will amend the caption. The steeply sloping road to the left leads towards the peak of Cnicht.
Erratic boulder, Croesor
Erratic boulder, Croesor
Round the bend... ...on the way to Cnicht.
Round the bend...
...on the way to Cnicht.
Track through the woods... ...to the west of Croesor.
Track through the woods...
...to the west of Croesor.
Parting of the paths The Snowdonia Slate Trail to the left, the start of the ascent to Cnicht to the right...
Parting of the paths
The Snowdonia Slate Trail to the left, the start of the ascent to Cnicht to the right...
Climbing towards Cnicht The path of slate and granite chips is mostly well-defined.  Cnicht looms in the background.
Climbing towards Cnicht
The path of slate and granite chips is mostly well-defined. Cnicht looms in the background.
Looking back towards the coast The Glaslyn estuary and Porthmadog, some 10 km away, with clouds starting to gather...
Looking back towards the coast
The Glaslyn estuary and Porthmadog, some 10 km away, with clouds starting to gather...
Sheep by the path... ...on the way to Cnicht.  They seemed surprised to see me, perhaps they had a sense that a storm was blowing in...    The rock is (I think) part of an intrusion of igneous bedrock formed between 485.4 and 443.8 million years ago during the Ordovician period.
Sheep by the path...
...on the way to Cnicht. They seemed surprised to see me, perhaps they had a sense that a storm was blowing in... The rock is (I think) part of an intrusion of igneous bedrock formed between 485.4 and 443.8 million years ago during the Ordovician period.
Climbing towards Cnicht The terrain is getting rockier but there is still a long way to go...
Climbing towards Cnicht
The terrain is getting rockier but there is still a long way to go...
Looking towards Yr Arddu Yr Arddu is an igneous intrusion of rhyolite, being bedrock formed between 485.4 and 443.8 million years ago during the Ordovician period.   There are countless sheep in the blown-up photo...
Looking towards Yr Arddu
Yr Arddu is an igneous intrusion of rhyolite, being bedrock formed between 485.4 and 443.8 million years ago during the Ordovician period. There are countless sheep in the blown-up photo...
Scramble over the scree... ...on the way to Cnicht.    There is a path of sorts, but this is maybe the trickiest point of the ascent.
Scramble over the scree...
...on the way to Cnicht. There is a path of sorts, but this is maybe the trickiest point of the ascent.
Snowdonia glacial landscape Drumlins and waste heaps from abandoned late quarries.
Snowdonia glacial landscape
Drumlins and waste heaps from abandoned late quarries.
Clambering to Cnicht The 'Matterhorn' like peak is getting steeper but the path is well-defined and steady progress can be made...
Clambering to Cnicht
The 'Matterhorn' like peak is getting steeper but the path is well-defined and steady progress can be made...
Glacial landscape south of Bwlch y Battel Rocks scoured and scraped by a glacier some 10,000 years ago.   A footpath on the OS map seems to pass through the middle of the lake.
Glacial landscape south of Bwlch y Battel
Rocks scoured and scraped by a glacier some 10,000 years ago. A footpath on the OS map seems to pass through the middle of the lake.
Cnicht: rocks at the top The 689-metre summit affords spectacular views, but there is no trig point.    The clouds are starting to look a little ominous.
Cnicht: rocks at the top
The 689-metre summit affords spectacular views, but there is no trig point. The clouds are starting to look a little ominous.
Looking back down the ridge... ...from the summit of Cnicht.    Porthmadog can just be seen in the far distance.
Looking back down the ridge...
...from the summit of Cnicht. Porthmadog can just be seen in the far distance.
Show me another place!

Yr Arddu is located at Grid Ref: SH6246 (Lat: 52.994973, Lng: -4.0461852)

Unitary Authority: Gwynedd

Police Authority: North Wales

What 3 Words

///destiny.stint.however. Near Maentwrog, Gwynedd

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Nearby Amenities

Located within 500m of 52.994973,-4.0461852
Yr Arddu
Ele: 389
Natural: peak
Source: npe
Wikidata: Q8059635
Lat/Long: 52.9957841/-4.0458088
Yr Arddu
Description: OS trig pillar
Ele: 388.924
Man Made: survey_point
Material: concrete
Note: Surface block on surface next to cairn/pile of stones with pin snapped off
Ref: SH62T063
Source: Ordnance Survey and Trigpointing.uk
Survey Point: pin
Tpuk Ref: TP8516
Lat/Long: 52.995762/-4.047892
Barrier: stile
Stile: ladder
Lat/Long: 52.9921489/-4.0460685
The data included in this document is from www.openstreetmap.org. The data is made available under ODbL.

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