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Plumstone Mountain

Plumstone Mountain

Plumstone Mountain

Page Type: Mountain/Rock

Location: Wales, Europe

Lat/Lon: 51.86990°N / 5.02775°W

Object Title: Plumstone Mountain

County: Pembrokeshire

Activities: Bouldering

Season: Spring, Summer, Fall, Winter

Elevation: 551 ft / 168 m


Page By: Nanuls

Created/Edited: Mar 18, 2009 / Apr 15, 2011

Object ID: 499090

Hits: 4068 

Page Score: 86.85%  - 23 Votes 

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Plumstone Mountain is less of a mountain, and more of a broad rounded heather clad hill, capped by a rocky tor of grit-like rock. It’s this summit tor that forms the mountains principle point of interest, and in fact, provides some bouldering problems of surprising quality. The tor takes the form of a relatively square cut mass of rock, which is generally excellent in quality, and yields a mixture of roof problems, arêtes, gritstone laybacks and steep faces. Much of the climbing is overhanging by 10˚ or 20˚, and as a result is fairly powerful. To further add to the spot’s character, all of this activity takes place against the backdrop of a 360˚ sweeping panorama of much of Pembrokeshire's finest landscapes.

Bouldering Problems

Plumstone Mountain is home to only a handful of recognised problems, however, exploration is at an early stage and there is plenty of scope for variation. Despite the diminutive size of the outcrop, there is enough here to keep most boulderers happy for at least a few hours. To get the most out of the area, a visit to the hill could be combined with visits to Poll Carn and Maiden Castle, which have a greater concentration of problems, and are located at Treffgarne just 4km to the east.

Grades are given using the British Technical Grading System which is usually used for rating the crux of trad climbs. The system is great for easy problems (less than 5a), however, above that they start to become too vague and in the higher grades they are hopeless with 6c covering everything from V6 to V10. A grading comparison table is available of Rockfax’s website. Problems are described clockwise, starting on the rock’s eastern face.

Problems on the east face. For a clean version of the photo click HERE.
Problems on the south face. For a clean version of the photo click HERE.

Problem 1 3c NO STARS
On the left side of the face are a couple of cracks; the right hand crack is an obvious layback.
Problem 2 3c NO STARS
The left crack is a slightly awkward off-width.
Problem 3 5b NO STARS
Climb directly up the flake.
Problem 4 5a NO STARS
A thuggish problem underclinging the diagonal crack to its conclusion.
Problem 5 5c NO STARS
Further down, the wall gives a fingery problem with a sloping finish.
Problem 6 5b NO STARS
The southwest arête is a one of the classic problems on Plumstone Moutnain.
Problem 7 6a NO STARS
Perhaps the best section with lots of variations, the prominent overhanging rib on the west side is taken from a sitting start, with a variety of dynamic slaps; most of the problems have similar grades.
Problem 8 6a NO STARS
The obvious roof problem on the boulder marking the northwest corner is surprisingly desperate.
Problem 9 5c NO STARS
Another overhang, another sitting start. What looks suspiciously easy becomes a desperate open-handed slap and sprawl onto the holdless slab.
Problem 10 5b NO STARS
The obvious crack, climbed as an eliminate jamming exercise, again from a sitting start, is painful.
Problem 11 5a 1 STAR
In the wall further along, a jump for the prominent jug gives a good dynamic problem.
Problem 11 Sit Down Start 5c NO STARS
Gaining the jug from a sitting start gives a whole new difficulty.
Problem 12 5a 2 STARS
The small face just around the corner taking a direct line just right of the arête.
Plumstone Mountain Problems

Problems on the west face. For a clean version of the photo click HERE.

Problems on the north face. For a clean version of the photo click HERE.
The view back to the car park. Not very far at all.

Weather Conditions

This section displays the weather forecast for Hayscastle Cross, which is located just to the north and is probably the nearest village to Plumstone Mountain. Both locations are at around the same height, however, Plumstone Mountain is more exposed to the area’s climate, and exposure and wind speed can also significantly lower temperatures.

When to Climb and Essential Gear

Plumstone Mountain
Bouldering on Plumstone Mountain's north face
Plumstone Mountain
Bouldering the easy layback problem on the East Face

Pembrokeshire's climate is generally pretty good whatever the season, so climbing is possible throughout the year. One advantage of its inland location is that if the weather is a bit rough it may be a good alternative to climbing on the area's sea cliffs, where you will inevitably receive a soaking... or worse.

Although not essential, a bouldering mat is recommended to soften those landings, and of course, you'll also need a chalk bag and a pair of rock shoes.

Getting There

Take the B4330 from Haverfordwest (SM 954 160) by turning west towards St. David’s at the Morrison’s supermarket roundabout, cross the river and turn north at the next roundabout (SM 952 159) which is signposted Croes-goch (SM 828 302). After about 5 miles you will reach the brow of the hill and a left hand turning (SM 923 235) onto a tarmac road (bridleway) leading to a parking area surrounded by large blocks next to a covered reservoir (SM 918 233). Plumstone Mountain’s rocks are located only 100m to the west up a broad path.

Red Tape and Access

No red tape here!

Although unlikely it's worth checking the countryside access map provided by the Countryside Council for Wales (CCW) regarding whether or not any restrictions on movement in the area are in place.

Countryside Access Map

Camping and Accommodation

There’s an almost unlimited supply of accommodation within the Pembrokeshire Coast National Park so it would be inappropriate to list it all here. For budget accommodation it’s worth checking out some of the following sites:

Youth Hostel Association in Wales
Independent Hostel Guide
Campsites in Pembrokeshire

For everything else and more see Visit Pembrokeshire’s website.


Open Space Web-Map builder Code
Navigation Maps

OS 1:25k Explorer Series OL 35 North Pembrokeshire/Gogledd Sir Benfro
OS 1:50k Landranger Series 157 St David’s & Haverfordwest/Tyddewi a Hwlffordd

Road Maps

OS Road Map 6 Wales/Cymru & West Midlands


Pembrokeshire Coast: The Official National Park Guide Pembrokeshire Coast: The Official National Park Guide by Alf Alderson, John Cleare and Ian Mercer.

A handy book full of useful information and interesting facts about the National Park.
Climbers Club Interim Pembroke Bouldering Guide Climbers Club Interim Pembroke Bouldering Guide - free download (May 2008) by Nigel and Helen Barry from an original by Martin Jones (1997)

A work in progress, but the only guide to Pembrokeshire’s bouldering; and it’s free!

External Links

Plumstone Mountain
East Face
Plumstone Mountain
South Face
Plumstone Mountain
West Face

Government Bodies and Other Organisations

Pembrokeshire Coast National Park Authority
Council for National Parks
Association of National Park Authorities
Pembrokeshire County Council
Carmarthenshire County Council
Ceredigion County Council
Countryside Council for Wales
Forestry Commission Wales
Environment Agency
Royal Commission on Ancient & Historical Monuments in Wales
Dyfed Archaeological Trust
The National Trust
Maritime and Coastguard Agency

Outdoor Organisations and Companies

British Mountaineering Council
Pembrokeshire Climbing Club
Pembrokeshire Outdoor Charter Group
South Wales Mountaineering Club
The Climbers Club


Weather from the Met Office
BBC Weather
Weather Channel UK

Tide Tables

BBC Tide Tables
UK Hydrographic Office

Tourist Information

Visit Wales
Visit Pembrokeshire
South West Wales Tourism Partnership
Local Information from Pembrokeshire Pages
Local Information from Pembrokeshire Online

Travel Information

Welsh Public Transport Information
Uk Train Timetable


Youth Hostel Association in Wales
Independent Hostel Guide
Campsites in Pembrokeshire

Maps and Guidebooks

Ordnance Survey
Cicerone Guidebooks
Climbers Club Guidebooks
Mid Wales Climbing
Cordee Travel and Adventure Sports Bookshop

Wildlife and Conservation

Joint Nature Conservation Committee
Royal Society for the Protection of Birds
Cardigan Bay Marine Wildlife Centre
South West Wales Wildlife Trust
Sea Trust
Pembrokeshire Bird Group

Welsh Language

Welsh Language Board
Cymdeithas yr Iaith Gymraeg Welsh language pressure group
Cymuned Welsh language pressure group
Yr Urdd (Welsh Youth Association)
Welsh-English / English-Welsh online translator
Welsh-English / English-Welsh Online Dictionary
Welsh-English / English-Welsh Online Lexicon


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