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Marsum
Route

Marsum

 
Marsum

Page Type: Route

Location: Snowdonia, Wales, Europe

Lat/Lon: 52.69310°N / 3.90774°W

Object Title: Marsum

Route Type: Trad Climbing

Season: Spring, Summer, Fall, Winter

Time Required: Half a day

Difficulty: V Diff (USA 5.2-5.4)

Number of Pitches: 3

Route Quality: 
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Page By: Nanuls

Created/Edited: Apr 22, 2008 / Dec 11, 2014

Object ID: 398219

Hits: 3373 

Page Score: 79.78%  - 11 Votes 

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Overview

Marsum (V Diff, 3 pitches, 105 m) is the easiest of six recorded climbs on the series of slabs known as the Whaleback Buttress, situated on the east facing cliffs of Cwm Cau. The slabs are located conveniently close to the path which circumnavigates Llyn Cau, making the climb a handy warm up route for anyone planning to attempt some of the harder climbs the rock face has to offer. Although it’s often used as a precursor to the area’s harder routes, it’s an enjoyable line in its own right, and offers good, clean rock, that dries quickly, in a location that is normally sheltered from the prevailing westerly winds.

F.A: B. J. Marsden and G. Summers, October 27th 1973.
There were signs that it had been climbed before.

Getting There

The approach begins at the main carpark (SH 732 115), and the start of the Minffordd Path on the southern side of Cadair Idris. The carpark is situated a few metres along the B4405 near the junction with the A487T. If coming from the north you will need to gain the A487T at the Cross Foxes Inn Junction (SH 766 167) on the A470T. If coming from the south you will need to travel north along the A487T from Machynlleth (SH 745 008). Cross the Afon Dyfi just to the north of the town (SH 744 019). Immediately after the bridge the road turns right very sharply, follow the road around along the winding and wooded pas through the villages of Corris and Corris Uchaf. As you exit the pass Cadair Idris will rear up in front of you and the junction off the main road will soon be signposted. The carpark is also serviced by a public bus which runs between Aberystwyth (SN 583 815) and Dolgellau (SH 728 177). Be aware though the bus drivers will drop you off but don't always pick you up afterwards. In these situations you may be forced to hitch, as the next bus will be a long time coming.


Cwm Cau from the Minffordd Path. Tapia Llwydion is the series of slabby crags on the right hand side of the panorama, just above Llyn Cau. Photo by Nanuls

Route Description

Approach

 
Marsum Photo-topo
Photo-topo of the route (Photo by Nanuls). For an unsoiled photo click HERE!

The approach takes the Minffordd Path from the main carpark (SH 732 115) on the south side of the mountain to Llyn Cau (SH 715 123). Start by leaving the carpark through the kissing gate at the far right hand (if your facing north) corner of the carpark, just behind the toilet block. Follow the broad gravel path north crossing a small concrete bridge, after around 100m you will reach another gate. Go through the gate and carry on following the gravel path past the CCW run visitors centre on the right, past a ruined farmstead on the left, until you reach another gate (SH 728 115). Go through the gate and begin the steep walk through the oak woodland up into Cwm Cau. From here on the stream that flows from Llyn Cau will always be to your right hand side. The path is generally good, and where erosion is at its worst, wooden steps and gangways have been constructed. After passing through a gate in a stone wall you will exit the woods, although the carry on a little further on the other side of the stream, and the path will take you in an ark into Cwm Cau proper. From here the path is of a more gradual nature, and should be obvious in all but the worst weather conditions. Stay on the path, ignoring the junction that bears left onto Craig Cwm Amarch, and make your way gradually to Llyn Cau (SH 715 123), which is dammed by an obvious moraine. Follow the moraine and the lake shore north, and cross the stream that exits the lake. The slabs are located on the far shore and barring all but the worst weather, should be obvious to anyone who has studied the photo's on this page. Follow the northern shoreline around the lake until you reach the base of Whale-back Buttress (SH 711 123) and the start of the climb.


The Route

 
The Whale-back Buttress
The start of the route is located just to the right of those sheep (Photo by Nanuls)

Start at the left hand edge of the slabs, just below a small groove.

Pitch 1 (30m): Climb through the clumps of heather to gain the groove under which you start, and climb up onto the crag's main slab. Climb up the slab, heading in a leftwards direction, and then move right blow a steeper section to the left end of the terrace. Belay from here or slightly higher up at the top of a short chimney.

Pitch 2 (25m): From the top of the short corner above the stance, move left again, and follow a broad rib above an imposing block at the top of the main slab.

Pitch 3 (50m): Continue to climb up the disjointed ribs above the huge block. Stay on the rock to avoid the vegetation and prolong the climb.

Descent


Descend to the base of the crag via a grassy gully that runs parallel on the southern side of the slabs. This can be slippery in just climbing shoes so take care.


Essential Gear

A single 60m rope will be fine, a moderate rack of nuts and hexes, and a few slings and screwgates. The route can be done in mountain boots or rock shoes, although boots are probably more advantageous considering the broken nature of the boot. Naturally you will also need all the other paraphernalia associated with hill walking in Wales: full waterproofs, fleece, hat, gloves and of course some lunch.

Maps

Open Space Web-Map builder Code
Navigation Maps

OS 1:25k Explorer Series OL 23 Cadair Idris & Bala Lake / Llyn Tegid
OS 1:50k Landranger Series 124 Porthmadog & Dolgellau

Road Maps

OS Road Map 9 Wales/Cymru & West Midlands

Guidebooks

Snowdonia (Official National Park Guide)

The Mountains of England and Wales: Volume 1 Wales (Cicerone Guide)

Hillwalking in Wales Vol 1 (Cicerone Guide)

Hillwalking in Wales Vol 2(Cicerone Guide)

Hillwalking in Snowdonia (Cicerone Guide)

Scrambles in Snowdonia (Cicerone Guide)

Scrambles and Easy Climbs in Snowdonia

Climbers Club Guide Wales: Meirionnydd

Rock Climbing in Snowdonia

North Wales Rock: Selected Rock Climbs in North Wales

External Links

 
Yours truely after completing Marsum (V Diff)
Nanuls near the end of the route (Photo by JoeHarris)
 
Joe after completing Marsum (V Diff)
JoeHarris at the end of the 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

CADW

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

UKClimbing

Plas y Brenin National Mountain Centre

Snowdonia-Active.com

Hightreck Snowdonia

Weather

Mountain Weather Wales

Weather from the Met Office

BBC Weather

Tourist Information

Visit Wales

North Wales Tourism Partnership

Local Information from Gwynedd.com

Local Information from Snowdonia Wales Net

North Wales Index

Travel

Welsh Public Transport Information

UUK Train Timetable

Accommodation

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

Images

Yours truely after completing Marsum (V Diff)The Whale-back ButtressThe Whale-back ButtressJoe after completing Marsum (V Diff)Marsum Photo-topoThe Whale-back ButtressCheesy belay shot