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Due to the ongoing spread of Covid-19, please abstain from climbing outside.

At UKC we are all climbers and we understand the strong urge to be outdoors as the weather is finally improving, but we feel this is no longer socially acceptable. You can read our statement here.

We have suspended the UKC Logbooks Top Ascents and Conditions pages and we will no longer accept ascents dated from 23rd March onwards. You can still upload your historic ascents.

UKClimbing Team

Climbs 35
Rocktype Rhyolite
Altitude 631m a.s.l
Faces SE

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Sam James (11) tackling his first multi-pitch route - Left Edge (VDiff) on Carnedd y Filiast. © Alan James - UKC and UKH

Crag features

Vast expanse of layered slab, giving rise to some exceptionally long, easy mountain routes; some giving over 1000ft of continuous climbing. Many routes have a serious feel due to the almost complete lack of protection and total isolation. A place for those seeking solitude or an escape from the bustle of more modern crags.

Approach notes

Approach directly up the hillside from the old Nant Ffrancon road. Once in the cwm the ridge opposite the slabs provides a good position from which to familiarise onself with the complex layout.

Rockfax App

Available in the Rockfax App

The Rockfax App brings together all the Rockfax climbing information with UKC logbooks and presents it into a user-friendly package for use on Android and iOS devices.


North Wales Climbs

North Wales Climbs covers the best climbing from the whole of this huge and varied area. The book is modelled on the very popular West Country Climbs which set a new standard for selected climb guidebooks back in 2010. It contains all the routes from the 2010 publication North Wales Classics and many more routes and areas, with expanded descriptions and much bigger photo-topos. The book covers all the major mountain crags from Llanberis Pass, to Cloggy; and from Ogwen to the Carneddau. It also includes the Llanberis Slate quarries, Tremadog, the Moelwyns, the Gwynant Valley, Mid-Wales, Gogarth and the North Coast Limestone.
More info

North Wales Classics

A significant addition to the Rockfax stable; North Wales Classics is a pocket-sized guide packs in hundreds of superb routes throughout the mountains of Snowdonia. From Tremadog to Tryfan, and everywhere in between, the book covers mid-grade routes on the best crags and features top-notch photo-topos and inspirational action shots taking you where you want to go.
More info
More Guidebooks:
North Wales Rock (2006)
Ogwen and Carneddau (1993)
The bracken isn't as bad as it looks from the road, but beware the very soft, very wet ground between the stile and the bracken.
skinne - 05/Sep/17
Lovely crag. Treacherous descent in the wet.
zimpara - 02/Sep/15
Quite simply the place to be :-)
Nicholas Livesey - 19/Oct/09
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Climbs at this crag

Climb name Grade
1 Solo Slab D 9
  Red Slab
3 Underlap (Red Slab) VD * 95
4 Route Two M 3
5 Safari D 10
6 Central Route (Red Slab) S ** 157
7 Savannah(Red Slab) HS 4a 18
8 Comrade(Red Slab) S 4a 14
9 Route One (Red Slab)
VD 16
10 Red Edge VD 11
11 Little One (Red Slab) M 13
12 Overlap (Red Slab) D 7
13 Shark Attack(Black Slab) S 4a 1
Climb name Grade
  Tree Slab
15 Walk This Way HS 4b 1
16 Crystal(Tree Slab) D 4
17 Dog Leg(Tree Slab) VD 5
18 Bracken Corner
S 6
19 White Lightening S 10
20 Static Electricity(Tree Slab) S 4a 1
21 Friction VD 7
  Central Slabs
23 Left Edge VD ** 348
24 Jay Route VD 6
25 The Waved Slab M * 39
26 Waved Slab Goodbye(Waved Slab) M * 8
Climb name Grade
27 Undulation 2 4
28 Hawkwind S 26
29 The Ridge D 54
30 Central Route D 46
31 Atlantic Slab
3 101
32 Russet Slab
VS 6
33 Jagged Creste *
S 5
34 Route one *
D 3
35 Little One *
M 2
36 The Tower * D ** 3
37 The Runle * M  
38 Across the Wide Sargasso Sea * VS 4c ***  
* Climbs listed in red are waiting to be checked by a crag moderator, and may not be accurate.

Moderators Updates to this page are checked by UKC volunteers Ian Archer and static266