Pumlumon Fawr [Plynlimon]

Pumlumon Fawr [Plynlimon]

Pumlumon Fawr, also known as Plynlimon, is the 752.8 m highest point of Ceredigion and the Cambrian Mountains. Its trig-point summit rises above open moorland and the Llyn Llygad Rheidol corrie. Other named Pumlumon tops are separate summits.

Summit and geology

The recorded highest-point feature is a trig point. Walking guides also describe a dry-stone shelter at the summit. The archaeological cairns in the summit landscape are separate features.

The British Geological Survey describes the Plynlimon inlier as Ordovician sedimentary rocks, including mudstone and sandstone. Pencerrigtewion sandstone forms western crags and block scree. This regional and slope-specific evidence does not identify the precise rock beneath the summit trig point.

Walking routes

Eisteddfa Gurig mine-track out-and-back

Start at Eisteddfa Gurig by the A44. Follow the farm access and Afon Tarennig track, then the uphill path leaving the track before the old mine workings. Cross the summit fence at the stile to reach the trig point. Return by the same uphill path, mine-track junction and valley track to the original start. Walking Britain gives 8.1 km, 333 m of ascent and 3 hours 20 minutes for this complete return. Its moderate grade comes with a warning that upper paths fade and this remote outing requires experienced navigation. https://www.walkingbritain.co.uk/walk-1304-description

Eisteddfa Gurig council circular trail

The council's Sir Chris Bonnington Trail starts and finishes at Eisteddfa Gurig car park. Follow the Tarennig-side track and old-workings area to Pumlumon Fawr, then descend the southern ridge by Pen y Drawsallt and the Dyll Faen edge before returning on the lower track via Yr Ochrydd. The council map gives 8.5 km for the complete circuit and lists five gates and one stile; it provides no duration or total ascent. This direction is an editorial description of the mapped loop. The route is not continuously signposted. https://www.ceredigion.gov.uk/media/gqbnixmb/eisteddfa-gurig-circular-2.pdf

Maesnant and the Caradog Jones Trail

Start at the lay-by near Maesnant. Follow the track around the lower northern slopes of Pumlumon Fach towards Llyn Llygad Rheidol, then climb steeply to the pass below Fach and take the southern summit spur to Pumlumon Fawr. Retrace that short spur, descend west along the Maesnant valley line, and rejoin the outward track to return to the lay-by. The council's map gives 6.2 km for the loop and summit spur, with no stated duration or total ascent. Visit Wales describes a different 5.6 km presentation with at least four hours; those figures have not been transferred to this route. https://www.ceredigion.gov.uk/media/30bkyxff/caradog-jones-trail-2.pdf

Terrain, views and safety

Farm tracks give way to open grass and peat, boggy ground and paths that can become faint. The Maesnant and Llyn Llygad Rheidol approach includes a steep upper slope.

In clear weather, views can include Cardigan Bay, Cadair Idris and Eryri, with the surrounding reservoirs and uplands nearer at hand.

Rapid weather changes and poor visibility make faint upland paths difficult to follow. Expect boggy ground and steep sections, particularly above Llyn Llygad Rheidol. Keep clear of old mine workings and unstable ruins; their present condition has not been inspected. The promoted routes are not continuously signposted. Use a map and compass and turn back if conditions exceed your abilities.

These are source-based route outlines, not turn-by-turn navigation or a current access or conditions check. Carry appropriate mapping and navigation equipment.

Access and facilities

The council routes start at Eisteddfa Gurig car park beside the A44 or a lay-by near Maesnant. Farm parking charges have been reported at Eisteddfa Gurig, but the current amount, payment method and availability are unverified. Maesnant is reached by narrow roads with limited parking; do not obstruct access.

Visit Wales warns that its Maesnant outing has no toilets or other facilities on or near the route. Bring food and water; current local business opening hours have not been checked.

A current trailhead public-transport service and last return have not been verified; check before travelling.

Name and history

Ceredigion visitor material explains Pumlumon as five tops or five peaks. University of Glasgow place-name research discusses a Welsh element meaning beacon. These are differently scoped explanations, so a definitive literal translation is not asserted here.

Heneb's historic-landscape account records Bronze Age summit cairns and traces of seasonal pastoral settlement and metal mining across the wider Pumlumon uplands. This does not date the modern summit shelter or assign the same history to every mine passed on a walk.