Walk 1903 - Pen y Fan & Corn Du from Cwmgwdi

      
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The Brecon Beacons are superb mountains with Pen y Fan, the highest peak in the National Park of the same name, rising to 886 metres. Formed from red sandstone its northern face is dramatic with sheer cliffs dropping into deep cwms divided by ridges. Pen y Fan is often very busy with most walkers approaching the mountain from Storey Arms or other points along the A470. This more challenging route endeavours to avoid the crowds and approaches from the north using one of the pleasant ridges mentioned above.

      
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The start is the car park (grid ref. SO024248), which can be found about half a mile south of Cwmgwdi along a narrow lane. The car park was once the site of an army camp. When parking remember that you will have to walk up the hill into the car park at the end of the day so parking nearer the bottom might be a better option as you can approach the climb fresh. Having parked walk uphill, go through the gate and follow the clear path south. The path climbs easily reaching the ridge linking Allt Ddu with Pen y Fan (grid ref. SO019233). On maps this ridge is named as Cefn Cwm Llwch and offers a superb way onto the Beacons. The path is clear, the views excellent and the grade not too steep apart from the final section up to Pen y Fan’s summit.

Arriving at the summit you are unlikely to enjoy the view by yourself. However it is impossible to deny the spectacular nature of the summit with a 360 degree panorama that covers much of the Brecon Beacons National Park, the hills of mid-Wales, the Usk Valley and South Wales. Continuing, walk west, descending slightly before regaining some of the lost height to reach the summit of Corn Du, which is very similar in character to its higher sister. Far below to the north lies Llyn Cwm Llwch and you should be able to make out the path descending to its north western shore. This path will form the key to our descent.

My preferred route off the summit of Corn Du is to head southwest on the main path leading to the A470. At grid ref SO005209 turn sharp right and head north across the western flank of Corn Du to reach the rim of Cwm Llwch (grid ref. SO002215). You can of course descend from Corn Du around the rim of Cwm Llwch but this always seems to be crowded with people struggling up the path. My route avoids this and is more pleasant under foot.

Continue along the clear path to reach the Obelisk to the lost lad. He was Tommy Jones and went missing on 4th August 1900 - the day the Queen Mother was born. The inscription tells the full story. Continue descending towards Llyn Cwm Llwch. If time and energy permit you can make the short diversion off the main path to the shores of the lake, but most continue ahead descending easily on the clear path. The path has been diverted around the cottage at Cwm-llwch (grid ref SO005237) from where you pick up a track. Follow this to reach a tarmac lane with the stream, on your right.

Follow the lane to reach a junction (grid ref. SO011252). Turn right and continue straight ahead ignoring the lane going off to the left. This lane is generally quiet but do be careful especially on bends where there are potential blind spots for traffic. Reaching a junction (grid ref. SO020252) bear right. This leads you to a further junction (grid ref. SO025251) where you turn right to regain the car park.

OS Map showing start

Ordnance Survey Map showing starting point of walk - Click Here

Suggested Maps

It is recommended you take a map with you when following a walk route. The preferred scale is 1:25000 used by the Explorer series.

	OS Explorer	1:25,000	Sheet OL12
	OS Landranger	1:50,000	Sheet 160

Note : If two maps are listed at the same scale then either (a) both are required for full coverage of the route or (b) the route is covered on both maps.

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