Rainbow Slab

United Kingdom / Wales / Caernarfon

Contributors
203 contributions since 6th February 2021.
TdG
82 contributions since 29th August 2025.

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Climbs

19 recorded climbs.

Year Climb Grade Climber Style Date
1984 Poetry Pink E5 John Redhead Lead | worked 1984
First ascent.
First ascent.
Cystitis by Proxy E5 John Redhead Lead | worked 1984
First ascent.
Poetry Pink E5 Dave Towse Lead | worked 1984
First ascent.
First ascent.

The long section to the first bolt at 22m was protected with three skyhooks and RURP.

Mark Lynden:

I watched JR leading this. At one point he got the sequence wrong and teetered backwards, but stayed on the rock because a small, sharp spike stuck into his finger and just held him on. [1]

References

[1] Llanberis Slate. United Kingdom: Ground Up, 2011.

[2] https://snowdoniamountainguides.com/wp-content/uploads/2022/07/Slate_Historical_Section.pdf

First ascent. With John Silvester.

It was really Silv’s [John Silvester’s] find - he had been there a lot recceing the Rainbow line. Myself, JR and Towsey were given the guided tour, but sworn to secrecy. The big surprise for everybody was the quality of the climbing on the Rainbow Slab. Oaky, the Dervish existed by then, but it was the Rainbow routes that really made people look again at the quarries. [1]

References

[1] Llanberis Slate. United Kingdom: Ground Up, 2011.

First ascent.
Rainbow of Recalcitrance E6 John Silvester Alternate Leads | worked Jul 1984
First ascent. With Mark Lynden.
1985
1986 Stiff Syd's Cap E6 John Redhead Lead | worked Apr 1986
First ascent.
Released from Treatment E6 John Redhead Lead | worked 26th Apr 1986
First ascent.
First ascent.
The Mau Mau E4 Paul Williams Lead | worked 20th May 1986
First ascent.
First ascent. With Mike Thomas.

References

[1] Mountain Issue 112, page 18 /library/11111/mountain-112

First ascent.

I was drinking whisky in the Padarn Lake Hotel with Gwion Hughes, who I was living with at the time, when suddenly I had a smart idea. ‘I have an excellent new climb to do. Why don’t we go climbing?’ The pair of us swayed and staggered up to the vast Rainbow Slab. The climb I had seen was a long hairline fracture splitting the left side of the slab. And I had the misguided notion to climb it on sight, without pre-inspection from a rope – and a little bit intoxicated. I threw a string of micro-wires, tiny brass-headed nuts, in the seam, without the least regard for my safety. The climbing was really quite difficult and became increasingly so. Nevertheless, I carried on with scant regard for my personal safety. I still remember attempting to pull on a depression into which you could place flat a fifty-pence piece: a strange, white pocket in a sea of blue-grey slate. I studied it for what seemed like an eternity and searched for my next hold. My shoe edges were set on mere ripples in the featureless slab. I began to slip and then accelerated down the slab, taking a twenty-five-metre fall. The rope burned through the lycra behind my knee. I came to a halt inches from the ground. [1]

References

[1] https://www.instagram.com/p/CjvzOT-Shsf/

Cure for a Sick Mind E7 Paul Pritchard Lead | worked 27th Nov 1987
First ascent.
1988 The Untouchables 8a Johnny Dawes Lead | worked 27th Apr 1988
First ascent.
1989
First ascent. 6 sessions.

Paul Pritchard writing in Mountain magazine:

Johnny Dawes succeeded on Nick Harms's old project right of Poetry Pink. This slab has become harder since Nick broke what he thought was the crucial hold and so lost interest. Johnny made the route after six days and feels it may be French 8c, the second in Wales this year. This tip-ripping, groin­ wrenching horror is now called The Very Big And The Very Small (E9 7b). Which one are you Johnny? [1]

References

[1] Mountain Issue 135 (1990), page 15 /library/11120/mountain-135

The Dark Half 8a Nick Harms Lead | worked Dec 1990
First ascent.
First ascent.

References

[1] Slate Historical Section

[2] Mountain 138 (1991), page 18 /library/11319/mountain-138

First ascent.

References

[1] Mountain Issue 140 (1991), page 15

1992 Cwms the Dogfish 8a Nick Harms Lead | worked Before 1st Jan 1992
First ascent.
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
First ascent.

I tried it a bit last year when I wasn't climbing that well, and at that time it felt really hard - in fact I wasn't sure I could do it. This winter I've bouldered a lot, and that gave me the edge I needed. [1]

References

[1] Slate Historical Section

[2] https://www.instagram.com/p/CKyTV40jqJp/

Climb Grade # Recorded Ascents Ascents Recorded Between
The Very Big and the Very Small 8b+ 5 3rd July 1990 – 1st January 2011
Bungles Arete 8b 4 11th December 1990 – 1st December 2006
The New Slatesman 8b 1 25th February 2008
Cwms the Dogfish 8a 3 15th October 2024
The Untouchables 8a 3 27th April 1988 – 1st November 2006
The Dark Half 8a 2 1st December 1990 – 1st January 1992
The Dark Destroyer 7c+ 1 13th April 1991
Climb Grade # Recorded Ascents Ascents Recorded Between
Raped by Affection E7 3 1st July 1984 – 1st January 2000
Cure for a Sick Mind E7 1 27th November 1987
Rainbow of Recalcitrance E6 3 1st July 1984 – 1st August 1984
Released from Treatment E6 2 26th April 1986
Naked Before the Beast E6 1 1st July 1984 – 1st August 1984
Stiff Syd's Cap E6 1 1st April 1986 – 1st May 1986
Poetry Pink E5 3 1st January 1984 – 1st January 2000
Cystitis by Proxy E5 2 1st January 1984 – 1st January 1985
Chewing the Cwd E5 1 14th February 1987
The Listening and Dancing E5 1 15th September 1986
The Mau Mau E4 1 20th May 1986
Colossus E3 0