The Buttress

Page Type
Snowdonia, Wales, Europe
Route Type:
Trad Climbing
Spring, Summer, Fall, Winter
Time Required:
Less than two hours
Very Difficult (USA 5.2 - 5.4)
Number of Pitches:

Route Quality: 1 Votes

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Page By:
The Buttress
Created On: Jan 28, 2009
Last Edited On: Jan 17, 2015


There are fewer more convenient locations to climb in Meirionnydd than Craig yr Aderyn, and there are fewer more convenient routes to climb on Craig yr Aderyn than The Buttress (Very Difficult). It starts practically out of the crag’s parking area. Basically what we have here is a good solid V. Diff., and a very good introduction to what the crag has to offer. It takes an obvious line up the centre of The Bastion Face, and can be climbed as two, three or four pitches. In addition there are a number of variations that can be made which add to its repeatability. On the whole the rock is safe and solid, although protection can be hard to find, and most will find something to enjoy here.

FA: Unknown

Getting There

Craig yr AderynThe start of the route, you can’t miss it (Photo by Nanuls)
Craig yr AderynThe route follows the crest of this ridge (Photo by Nanuls)
Craig yr AderynThe view back down the first pitch back to the start (Photo by Nanuls)
Bastion DescentThe descent ramp which runs down the back of the Diamond Face (Photo by Nanuls)

Most visitors to Craig yr Aderyn will approach the rock from the east, if you have to approach from the west, then you clearly know the area well enough already, and therefore don’t need a section such as this to help you get there. So, if you are coming from the east, you need to turn off the A470 at the Cross Foxes Inn junction (SH 766 167), and drive south along the A487 for some 6km to the junction for the B4405 near the Minffordd Hotel (SH 732 114). For those familiar with the area, this is the same turning as you would take for the car park on the southern side of Cadair Idris where the Minffordd Path starts. Drive along the B4405 as far as Abergynolwyn (SH 677 069). In the centre of the village there is a crossroads, turn right here and drive north up a narrow unclassified road to another set of crossroads marked by a public phone box (SH 662 079). Turn left here and drive west along another unclassified road. After a around a kilometre and a half the road reaches Craig yr Aderyn and passes along the base of its north face, There are various lay-bys along the road where parking is available, the best ones for this route are located just beyond the junction at grid reference SH 643 071. The route starts at the lowest point of the crag, right next to the road.

Route Description

Pitch 1 (12m): Ascend easily up the left-hand wall of the buttress to a large ledge where a spike belay is possible. Beware of gorse needles in the pockets on the lower parts of pitch.

Pitch 2 (21m): The longest pitch of the route. Climb to the left of a bulge, followed by a direct line up to easier ground just below a steep slightly overhanging wall.

Pitch 3 (8m): Climb the steep wall, which may look harder than the VD grade the route is given, but is made easy by good holds. Scramble up the remaining rock to belay.

Descend via a narrow ramp which can be accessed by walking a little further uphill and slightly to the left.

The Buttress Route. For a clean version of the photo click HERE

Essential Gear

A single 50 or 60m rope will be fine (you may want to use a double or twin but its not essential) a moderate rack of nuts, hexes and maybe a few cams. Also be sure to carry a selection of slings and screwgates for constructing belays. The route is best done in rock shoes as boots would be way too cumbersome. Naturally you will also need all the other paraphernalia associated with climbing and hill walking in Wales: full waterproofs, fleece, hat, gloves and of course some lunch.


Open Space Web-Map builder Code
Navigation Maps

Ordnance Survey 1:25k Explorer Series OL 23 Cadair Idris & Bala Lake/Llyn Tegid

Ordnance Survey 1:50k Landranger Series 124 Porthmadog & Dolgellau

Harvey Map Services 1:25k Snowdonia Cadiar Idris

Harvey Map Services/BMC 1:40k British Mountain Map Snowdonia South

Road Maps

Ordnance Surbey Tour Series North and Mid Wales


Snowdonia (Official National Park Guide) Snowdonia (Official National Park Guide) by Merfyn Williams with contributions from Ian Mercer and Jeremy Moore

A handy book full of useful information and interesting facts about the National Park.
Climbers Club Guide Wales: Meirionnydd Climbers' Club Guide Wales: Meirionnydd by Martin Crocker, John Sumner, Terry Taylor, Elfyn Jones, with contributions from Mike Rosser, Mike Lewis and Dave Wrennall

The definitive climbing guide to the area. Contains detailed descriptions and excellent diagrams of all known routes on Craig yr Aderyn. An essential purchase if you plan to do a lot of climbing in Mid Wales.
Rock Climbing in Snowdonia Rock Climbing in Snowdonia by Paul Williams

A good general rock climbing guide for North Wales. It describes a few routes on The Bastion and has a handy photo-topo of the face. Ideal for the occasional visitor to the area.

External Links

Craig yr AderynThe Bastion Face - The Buttress route takes the crest of the arête (Photo by Nanuls)
Craig yr AderynThe Bastion - The face to the far right of the photo is the last pitch of the The Buttress Route (Photo by Nanuls)

Government Bodies and Official Organisations

Snowdonia National Park Authority

Council for National Parks

Association of National Park Authorities

Natural Resources Wales


Royal Commission on Ancient & Historical Monuments in Wales

Gwynedd Archaeological Trust

Snowdonia Society

The National Trust

Hiking, Climbing and Mountaineering Organisations and Companies

British Mountaineering Council

The Climbers’ Club


Plas y Brenin National Mountain Centre

Hightreck Snowdonia


Mountain Weather Wales

Weather from the Met Office

BBC Weather

Tourist Information

Visit Wales

North Wales Tourism Partnership

Local Information from

Local Information from Snowdonia Wales Net

North Wales Index


Welsh Public Transport Information

UK Train Timetable


Youth Hostel Association in Wales

Pete's Eats

Pen-y-Gwryd Hotel

Maps and Guidebooks

Ordnance Survey

Harvey Map Services

Cicerone Guidebooks

Climbers’ Club Guidebooks


North Wales Bouldering

Cordee Travel and Adventure Sports Bookshop

Wildlife and Conservation

Joint Nature Conservation Committee

Natur Gwynedd

North Wales Wildlife Trust

Royal Society for the Protection of Birds

The Buttress

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Craig yr AderynRoutes