Cadair Berwyn

Cadair Berwyn

Cadair Berwyn is the highest mountain in the Berwyn range, reaching 832 m in Powys. It combines a rocky eastern escarpment with broad, peat-covered western slopes. The highest point and the North Top trig are separate objectives.

Geology

The wider Berwyn landscape is largely Ordovician mudstone and siltstone, with volcanic ash beds in some areas. Glaciers shaped the cwms and valleys, while blanket peat covers much of the upland ground.

Routes

Pistyll Rhaeadr, Cadair Berwyn and Moel Sych circuit

Climb from the waterfall car park by the valley path to Llyn Lluncaws, then take the steep southern rim of the cwm to the main summit. Return over Moel Sych and south along Trum Felen, descending on the established path to the same car park. Mud and Routes lists 8.23 km, 589 m of ascent and 5 hours for this circuit. Visiting the North Top trig adds a detour beyond that itinerary.

Cadair Berwyn circuit from Llandrillo

From the village car park, the council route climbs via Blaen-y-dre and open moorland to the main ridge. Turn south to the trig and continue to the true summit rocks. Retrace to the trig, descend west and follow the mapped stream crossings and lower track back into Llandrillo. The published circuit is 16 km, with a stated 750 m climb and an allowance of six to seven hours. It does not include the summits of Cadair Bronwen or Moel Sych.

Summit Features

The highest point is the rocky outcrop at SJ 07165 32355. North Top is lower at 826.4 m and carries the trig pillar. Between the two is a shelter on the remains of an older burial cairn.

Terrain Type

Steep paths and rocky outcrops give way to heather, grass and peat. Western approaches can be very boggy and their paths indistinct; the Llandrillo return also crosses streams.

Views

Llyn Lluncaws lies beneath the eastern cliffs. Clear weather opens views towards the Aran ridge, Arenig and Eryri, with the Shropshire plain to the east.

Hazards

Stay back from the eastern crags of Craig y Llyn and Craig Berwyn, especially in wind, mist or ice. Do not take a direct shortcut down to Llyn Lluncaws. Boggy ground and weak paths require reliable navigation, and the western stream crossings can become difficult after rain. Keep to the established waterfall paths and away from the edge.

Check mountain weather, carry warm waterproof clothing and navigation equipment, and allow for slower winter travel. Snow or ice may require winter equipment and skills. Follow local notices, keep dogs under close control and leave archaeological stones undisturbed.

Nearby Summits

Moel Sych is 826.7 m, Cadair Berwyn North Top 826.4 m, and Cadair Bronwen 783.4 m. Adding extra summits changes the route distance and effort.

Access

The southern start is the paid car park at Pistyll Rhaeadr / Tan-y-Pistyll, approached from Llanrhaeadr-ym-Mochnant. Its narrow road can be congested; obey local signs and keep passing places and emergency access clear. Check the current parking tariff and closing arrangements. The western circuit starts at Llandrillo village car park.

Tanat Valley Coaches serves Llanrhaeadr-ym-Mochnant, but an onward journey is needed to the waterfall. TrawsCymru T3/T3C lists Llandrillo. Check travel-date timetables and return connections.

Facilities

A cafe and toilets are available at Pistyll Rhaeadr subject to opening arrangements. Llandrillo has community-managed toilets at Y Wern. Bring supplies for the mountain day.

History

Cadair means “chair”, referring to the mountain’s shape. Berwyn probably derives from words for summit/head and white/fair, according to the Welsh Place-name Society. Bronze Age burial cairns remain along the ridge, including beneath the North Top trig and the shelter farther south. A 2014 survey measured the true summit at approximately 832 m.