Saturday, 26 July 2025

Mapping Mountains – Trimble Surveys – Mynydd Epynt


18.05.25  Pen y Crug (SO 029 303) 

Pen y Crug (SO 029 303)

Hill celebrations are always wonderful occasions.  They are culminations of what for many people are years of ticking off hills in a list.  They are also occasions when old and new friends meet, and if combined with beautiful weather, as today was, they can be a shear joy to experience.

Today was the finish of Mark Trengove’s Welsh Hump completion.  For the uninitiated, a Hump is a 100m prominence hill.  There are 368 qualifying Welsh hills that meet this criterion and the one Mark had singled out for his last was Pen y Crug, which connects with the Mynydd Epynt group of hills.  Although much of this hill range is out of bounds due to a military training area, Pen y Crug is positioned on the southern periphery and well away from any out of bounds land.

I had been up the hill once before, in September 2017, when Lou and I ascended from the south-east on a good track that turned to a friendly green path leading up through the autumnal colour to the trig pillar that sits atop the summit.  On this day the tops of the higher Beacons were just skimmed with cloud, otherwise the hill gave excellent views.  Today the sky was an unadulterated blue with skylarks singing above and a welcome slight breeze cooling proceedings.  It was a perfect day for a hill celebration.

Mark drove from Mold to Welshpool, from where I then drove south to the car park at the base of the hill to its north.  This was close to its bwlch and gave me a chance to experience the hill from a different perspective and approach, which I always enjoy.

Our meeting time was midday and we arrived with 20 minutes to spare.  Soon cars started to appear, Rick and Jenny, Brent Lynam, Alex Cameron and Tony Jenkins soon arrived, followed by Barry Smith, Chris Bienkowski, Adrian Rayner and Keith Anderson.  It was good to see all, many who I had not seen for quite sometime.

I made an excuse to wander off to take a few photos of the hill, and asked Mark to keep everyone at bay for a few minutes; this gave me opportunity to head in to an adjacent field to get a few photographs, but also gave opportunity to gain a few minutes on everyone else and sneak away for a leisurely plod up the path leading to the open hillside above.

It felt good to be out in the sunshine, slowly wandering taking in the surrounds with skylarks singing, bees buzzing and bluebells and greenery all around, and all with the backdrop of the blue sky.  The path led up with greened hedgerows either side and manicured grazed fields beyond.  The enclosed path gave views directly toward the higher hill, which loomed above in a gently curved profile.

The path led to a gate which gave access to the open upper hill, from where an earthen dried path contoured up giving extended views past hillsides of bluebells to the light grayed ridges of the Black Mountains away to the east. 

The view east toward the Black Mountains

My pace was leisurely and all too soon I was caught by the throng of people following.  We soon crested the ridge that affords views south toward the higher Beacons.  Beyond the greened path led toward the ancient embankment and ditches that encircle the upper hill. 

I was soon caught up

Arriving at the summit we waited for Mark, who sauntered up behind us.  As he approached the high point there was a guard of honour waiting for him, with raised walking poles leading him over the summit of the hill toward the trig pillar.  He’d completed the Welsh Humps.  

Mark approaching the summit of Pen y Crug

All hill lists can take you on a journey to places that otherwise you would not visit; this is part of their appeal.  There is of course the small bonus that hills can afford tremendous experience and I’m sure the Welsh Humps have given Mark some excellent days on the hill. 

The guard of honour leading Mark to the summit

The next hour was one of those special occasions on the hill, with lots of conversation small glasses of Welsh whiskey, cake, strawberries and lots of nibbles and photos. 

Mark celebrating his completion of the Welsh Humps

During our time on the summit someone mentioned that Pen y Crug was also Adrian’s 7,000 Tump.  Another remarkable achievement and soon Adrian was beside the trig pillar kindly posing for a few photos.  He had kept this quiet, allowing for Mark’s celebration. 

Adrian at the summit of his 7,000th Tump

After we had finished off much of the celebratory food and drink things started to be packed away and as we waved Rick and Jen off down the hill, the rest of us followed ten minutes or so afterward. 

A nice touch brought by Mark for cake adornment

Leaving the summit we headed north down the upper part of the hill until connecting with the earthen ramparts, and then followed these around the hill, before connecting with our inward route and following this back down through the heat of the afternoon to the awaiting cars below. 

At the summit of Pen y Crug, from left to right we have; Bryher, Rick, Jenny, Barry, Alex, Keith, Adrian, Tony, Brent, Chris and Mark

It had been an excellent time on the hill and was rounded off with a visit to a pub on the outskirts of Brecon for a good meal and more interesting conversation. 

 

Survey Result:

 

Pen y Crug 

Summit Height:  331.2m (converted to OSGM15) (previous Trimble GeoXH 6000 survey)  

Summit Grid Reference:  SO 02927 30312 (previous Trimble GeoXH 6000 survey)

Bwlch Height:  219.9m (LIDAR)

Bwlch Grid Reference:  SO 02162 30880 (LIDAR) 

Drop:  111.4m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance:  33.62% (Trimble GeoXH 6000 summit and LIDAR bwlch) (Lesser Dominant addition)

 

 

For details on the summit survey of Pen y Crug


For further details please consult the Trimble Survey Spreadsheet 

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