Clogwyn Du'r Arddu

United Kingdom / Wales / Caernarfon

Also known as Cloggy and The Black Cliff.

Colin Kirkus:

On Snowdon there is a cliff called Clogwyn Du'r Arddu. It's name is enough to frighten away many people. It is over 500 feet in height and mostly vertical, quite the most magnificent precipice in England and Wales.

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399 contributions since 3rd January 2021.
376 contributions since 12th July 2025.
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262 contributions since 22nd August 2025.
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Climbs

42 recorded climbs.

Year Climb Grade Climber Style Date
First ascent. With Morley Wood. 3 points of aid.

Herbert Hartley:

The great black cliff of Clogwyn Du'r Arddu had been looked at by climbers for many years but none had ventured far up the steep repelling walls of the E and W Buttresses. Fred and Morley Wood addressed themselves to the task o f forcing a route up the former. This was a formidable undertaking requiring great persistence, skill and ingenuity until all the problems were solved and the name of Pigott's Route bestowed upon a superb climb.

References

[1] https://www.alpinejournal.org.uk/Contents/Contents_1980_files/AJ%201980%20259-269%20In%20Memoriam.pdf

Pigott's Climb HVS Morley Wood Alternate Leads | ground up May 1927
First ascent. 3 points of aid.
1928 Longland's Climb VS Jack Longland Alternate Leads May 1928
First ascent. With Fred Pigott, Morley Wood and Frank Smythe.
Longland's Climb VS Fred Pigott Alternate Leads | ground up May 1928
First ascent.
1929
First ascent.

Albert Hargreaves:

To take out 130 feet of line on to this entirely virgin face up a steep, loose and grassy wall, tremendously exposed, with no knowledge of what difficulties lay in the 600 odd feet above, was surely mountaineering courage of the highest order. And it must have required the utmost skill and route-finding ability, as well as courage, to finish that climb. Despite the many more difficult shorter routes that have been done "unseen" I think this expedition will stand out in the history of British rock-climbing as a most important event. [1]

References

[1] Climbers' Club Journal 1943, page 170 https://ccjournals.ams3.digitaloceanspaces.com/1943%20Journal_web.pdf

Great Slab VS George Graham McPhee Alternate Leads | onsight 15th Jul 1930
First ascent.
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
First ascent. 1 point of aid.

with J Cooper

1942
1943
1944
1945
1946
1947
1948
1949
1950
1951 Vember E1 Don Whillans Alternate Leads | onsight 13th Oct 1951
First ascent. With Joe Brown.
Vember E1 Joe Brown Alternate Leads | onsight 13th Oct 1951
First ascent. With Don Whillans.
1952 The Black Cleft E2 Don Whillans Alternate Leads | onsight 4th May 1952
First ascent.
The Black Cleft E2 Joe Brown Alternate Leads | onsight 4th May 1952
First ascent.
First ascent. With Ted Wrangham.

The rest of the party were unable to follow, and when 200ft of ropes was runout Streetly soloed out to the top of the cliff. This was the hardest slab in Wales at the time and only Streetly's second climb on the cliff. One peg runner was inserted after 70ft of climbing. [1]

References

[1] Clogwyn D'ur Arddu - Fifth Edition (The Climber's Club 2004) by Nick Dixon

1953
1954
1955 Slanting Slab E4 Don Whillans Lead 9th Jul 1955
First ascent. 2 points of aid.
Woubits E2 Joe Brown Alternate Leads | onsight 30th Aug 1955
First ascent.
Woubits E2 Don Whillans Alternate Leads | onsight 30th Aug 1955
First ascent.
1956 White Slab E2 Morty Smith Alternate Leads 19th Apr 1956
First ascent. With Ron Moseley. 1 point of aid.
White Slab E2 Ron Moseley Alternate Leads 19th Apr 1956
First ascent. With Morty Smith. 1 point of aid.
Taurus E4 Don Whillans Lead 24th Jul 1956
First ascent. With Joe Brown.
1957 The Mostest E2 Joe Brown Lead | onsight 9th Apr 1957
First ascent. 4 points of aid.
November E3 Joe Brown Lead | onsight 3rd May 1957
First ascent. With Morty Smith. 8 points of aid.
1958 Shrike E2 Joe Brown Lead | ground up 25th Oct 1958
First ascent. With Morty Smith. 4 points of aid.
1959 The Troach E2 Hugh Banner Lead | worked 4th Oct 1959
First ascent. 1 point of aid.
1960
1961
First ascent. Belayed by Baz Ingle. 6 points of aid.

At the same time Pete made the first ascent of Great Wall on the East Buttress. Baz was going to follow Pete but heavy rain meant an early end to the day of climbing. Great Wall had been unofficially known as Master’s Wall and had been attempted several times by Joe Brown.

Tony Smythe writes of the ascent in Rock Climbers in Action in Snowdonia: ‘The climb is just about the ultimate in difficulty and entails a 200-foot run-out using only three pitons for aid. A great controversy was waged over Pete Crew’s ascent. He abseiled down the wall, cleared out the crack and inserted all the necessary chockstones, thus preparing the route beforehand. But this technique is accepted and had been used before on the cliff’.

References

[1] https://www.climber.co.uk/people/peter-crew-the-climbing-years/

1963 West Buttress Eliminate E3 Pete Crew Alternate Leads | onsight 3rd Jun 1963
First ascent.
West Buttress Eliminate E3 Baz Ingle Alternate Leads | onsight 3rd Jun 1963
First ascent.
First ascent.

Crew placed a bolt runner, the first on 'Cloggy'. This was removed by Ed Grindley in 1973.

1964
1965
1966
1967
1968
1969
1970
1971 Curving Arete E4 Ray Evans Lead Aug 1971
First ascent.
1972
1973
First ascent.

Graded HVS at the time!

References

[1] Arnis Strapcans' first ascents book, Mountain Heritage Trust collection.

Quiver E5 Phil Bartlett Lead 29th Jun 1974
First ascent.
1975
1976
First ascent. With Dave Armstrong.

Pitches 2 and 3 were later climbed on 28th May 1978.

1978 Pistolero E6 Ed Cleasby Alternate Leads 30th May 1978
First ascent. With Phil Burke and Keith Myhill. 2 points of aid.
Pistolero E6 Phil Burke Alternate Leads 30th May 1978
First ascent. With Ed Cleasby and Keith Myhill. 2 points of aid.
Pistolero E6 Keith Myhill Alternate Leads 30th May 1978
First ascent. With Phil Burke and Ed Cleasby. 2 points of aid.
First ascent. With Chris King.
First ascent.

An early foray up the right side of the Great Wall.

1980
1981
First ascent.

...my own attempts from 1980 have been well wagged about. I call them The Tormented Ejaculation - not just mere climbing, but an expression of the flesh and blood of my work, the poetry of rock-movement inextricably bound up with the network of shape and colour. A last look at the line and a strange impulse took hold of me. I went for it. At 70ft I woke up. Ghastly! The aggression was dissipated and the fear gripped me. I had climbed with no protection and was now eyeballing a tiny shallow crack. I remembered it from the abseil and it had looked pathetic. It was real now. I contemplated jumping on the scree below before the situation got out of control. I fell a million times, my arms unfolding, my breath fading. A no. 1 stopper came to a halt, half-way down this crack, half in, rocking - my weight was on it...the mental preparation was becoming harder and harder. The so-called psyching up, a pain beyond reason. Out of the accquaintance grew more and more fear. Gone the initial naivety that had sparked off this terrifying enterprise. I knew the score and was unnerved by it...I distinctly felt a tiny slide on a friction move lower down and became very insecure, with my feet in canyon boots. I got to the little crack another 20 feet up and was dangerously pumped because of the extra strain on my fingers. The resin was wearing off the boots. I managed to place an RP1, clipped in, and was about to place a No 2 when my right foot shot off.The strain came on the RP, ripped it through, and I cartwheeled a long way down the wall. [3]

References

[1] Clogwyn Du'r Arddu (Climbers' Club Guides) 2004, Nick Dixon

First ascent.

Jerry had practiced what he thought would be the crux moves on abseil. However, the dangerous lower section was climbed without pre-practice and did not go to plan:

In that photo [see [2]] I am absolutely climbing to save my life. I'm out of control, it's way harder than I thought, I didn't want to be there and I'm absolutely terrified.

...

You get to some footholds where you can stand and get some RPs behind these little flakes...all I was thinking was "I need to get rescued, I need to get rescued". The I got there, got the wires in, settled down...I just told myself "I never want to climb that bottom bit again, I'm here now and I've got these wires in". The crux was above here but I'd sussed those moves on abseil...so I stood there for a while and thought "let's just go for it".

Jerry prepared for the route by soloing Great Wall, Curving Arete and The Boldest – some of these were onsight.

The day after Master's Wall, he soloed Right Wall and six other Extremes on Dinas Cromlech.

He later spoke about having potential post-traumatic stress symptoms:

And still I think about those things. It's like a post-traumatic thing, and you still think about it and stuff. […] I'll be dreaming, and I'll be just like on the thing, and then I'll wake up and think, and then I'll be going, oh God, that was so lucky, or I don't know. Not really great feelings, just feelings of like, what the hell was I doing? And I was so bloody lucky, so lucky, so lucky. And you think, what if I'd have broken that hold, and you had pictures of yourself flying through the air and stuff.(3)

References

[1] https://www.facebook.com/climbing.in.the.80s/photos/a.270388289694020/3446194975446653

[2] https://www.facebook.com/rockarchivist/photos/a.116371059819780/116371949819691

[3] Interview with Niall Grimes on Jam Crack Podcast, March 2022 http://www.niallgrimes.com/jam-crack-climbing-podcast/2022/3/17/jcpc-113-jerry-moffatt

First ascent.

Probably the hardest thing I did at the time, and I was going really well. [1]

References

[1] https://www.youtube.com/watch?v=zQzdrpFm_Pg

Womb Bits E5 John Redhead Lead | worked 23rd Jul 1984
First ascent. With Dave Towse.
1985
1986 Authentic Desire E7 John Redhead Lead | worked 24th Sep 1986
First ascent.
First ascent. Belayed by Sean Myles and Bob Drury. 4 sessions.

I went for the crux, the motion startling me like a car unexpectedly in gear in a crowded parking lot. I swarm through the roundness of the bulge to a crank on a brittle spike for a cluster of three crystals on the right; each finger crucial and separate like the keys for a piano chord. I change feet three times to rest my lower legs, each time having to jump my foot out to put the other in. The finger-holds are too poor to hang on should the toes catch on each other. All those foot-changing mistakes on easy moves by runners come to mind. There is no resting. I must go and climb for the top. I swarm up towards the sunlight, gasping for air. A brittle hold stays under mistreatment and then I really blow it. Fearful of a smear on now-non-sticky boots I use an edge and move up, a fall fatal, but the automaton stabs back through, wobbling, but giving its all and I grasp a large sidepull and tube upward. The ropes dangle uselessly from my waist. Arthur Birtwistle on Diagonal, I grasp incuts and the tight movement swerves to a glide as gravity swings skyward ...

References

[1] https://www.youtube.com/watch?v=JMX4NAw0NSE

[2] https://www.youtube.com/watch?v=sNb5_PYRhQA

[3] Photos from the first ascent by Jonathan Reti. Jonathan was the only person at the crag that day with a camera. Later pictures of Johnny in white vest were not of the actual ascent. https://www.flickr.com/photos/30814373@N02/albums/72157712866661618/

That top crux was difficult for him and his method was pretty snatchy, which is why I moved out of the fall line in case he fluffed it. Shockingly bold.

[4] Mountain Issue 112, page 17 /library/11111/mountain-112

[5] Clogwyn Du’r Arddu Climber’s Club guidebook by Nick Dixon

1987 The Rite of Spring E7 John Redhead Lead | worked 17th Apr 1987
First ascent. With Dave Towse.
Rupert Road E6 Johnny Dawes Lead | onsight 29th Apr 1987
First ascent.
Rupert Road E6 Mike Raine Lead | onsight 29th Apr 1987
First ascent.
First ascent.

An earlier version climbed with Andy Popp in 1985 avoided the main pitch.

West Indian Face E8 Johnny Dawes Lead | worked 21st May 1988
First ascent.
First ascent. With Darrel Crilley.

I'd practiced the crux on abseil many times, and after leaving the belay with just one krab on my belt, it flowed as in a dream until I was on the upper wall after committing through a 6b sequence (15ft above the poor lower-only RURPs and 70ft above the belay). I found moves to finish that I hadn't practiced; why?, why? In desperation, now fully here and awake, I slapped and groped with a pylon's span of rope between me and a grinning Darril [belayer]. [1]

References

[1] Dixon, N. (2004). Clogwyn Dur Arddu: Climbers' Club Guide to Wales, page 187. United Kingdom: Climbers' Club.

1990
First ascent.

I had just recovered from a paralysing virus, no doubt self-induced, as most viruses are, which hospitalized me for several days. The births of four paintings (titled The Shaft of a Dead Man) were no doubt the product of this alternative head space. [1]

References

[1] Dixon, N. (2004). Clogwyn Dur Arddu: Climbers' Club Guide to Wales, page 188. United Kingdom: Climbers' Club.

1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017 The Cwm Face E7 Alex Mason Lead | worked 17th Jul 2017
First ascent.
First ascent.
Dignitas E8 Nick Dixon Lead | worked 19th Jul 2018
First ascent.
Climb Grade # Recorded Ascents Ascents Recorded Between
West Indian Face Mecca E11 (approx) 0
Indian Face E9 10 4th October 1986 – 25th July 2023
Face Mecca E9 3 1st June 1989 – 1st July 2016
The Cumbrian Face E8 1 1st July 2018 – 1st August 2018
West Indian Face E8 1 21st May 1988
Dignitas E8 1 19th July 2018
Master's Wall E7 7 14th July 1983 – 31st August 2021
Authentic Desire E7 7 24th September 1986 – 9th July 2019
Margins of the Mind E7 4 1st January 1984 – 1st July 2013
Shaft of a Dead Man E7 2 1st January 1991 – 1st January 2017
The Rite of Spring E7 2 17th April 1987 – 1st January 1994
Dinas in the Oven E7 2 21st May 1988 – 19th June 2021
The Cwm Face E7 2 17th July 2017 – 1st January 2020
The Tormented Ejaculation E7 1 1st January 1982 – 1st January 1983
A Midsummer Night's Dream E6 9 28th July 1977 – 13th June 2018
Pistolero E6 4 30th May 1978 – 16th July 1983
Rupert Road E6 2 29th April 1987
Quiver E5 1 29th June 1974
Womb Bits E5 1 23rd July 1984
Great Wall E4 4 1st January 1962 – 12th July 1983
The Boldest E4 4 21st September 1963 – 12th July 1983
The Axe E4 3 6th July 1979 – 1st May 1987
Slanting Slab E4 2 9th July 1955 – 14th July 1983
Curving Arete E4 2 1st August 1971 – 12th July 1983
Spreadeagle E4 1 31st August 1979
Taurus E4 1 24th July 1956
November E3 3 3rd May 1957 – 1st January 1978
West Buttress Eliminate E3 2 3rd June 1963
Bloody Slab E3 1 10th June 1952
Illegal Eagle E3 1 30th March 1974
Shrike E2 5 25th October 1958 – 1st January 1988
Woubits E2 3 30th August 1955 – 1st July 1970
The Troach E2 3 4th October 1959 – 1st January 1977
White Slab E2 3 19th April 1956
The Black Cleft E2 2 4th May 1952
The Mostest E2 2 9th April 1957 – 1st January 1969
Vember E1 4 1st January 1931 – 13th October 1951
Pigott's Climb HVS 2 1st May 1927 – 1st June 1927
Great-Bow Combination HVS 0
Bow-shaped Slab HVS 1 20th September 1941
Longland's Climb VS 3 1st May 1928 – 29th June 1929
Great Slab VS 2 15th June 1930 – 15th July 1930