Thursday, 15 January 2026

Mapping Mountains – Trimble Surveys – Hirddywel

 

19.11.25  Gorn Hill (SN 968 844) 

Gorn Hill (SN 968 844)

I’d only visited Gorn Hill once before in January 2003 and a second visit was long overdue, especially as Eryl and I had mentioned this hill for a small walk on a number of occasions over recent years and today with fairly settled weather, albeit with a chilled easterly breeze, proved as good a day as any to meet and venture forth to the Gorn.  We also had the advantage of Rita offering to drop us off at the top of the road which leads to the footpath for the usual ascent of the hill.

A few breeze blown sleety drops of rain skidded across the sky as we started our walk from the top of the road following the lane leading to Gorn Farm.  These were being blown in on an easterly breeze and the hills adjoined to Pegwn Mawr that from our vantage point were now behind us, were adorned with the first snows of winter with their prominent wind turbines marching across their upper ridge. 

Dusting of snow on the Pegwn Mawr hills

There’s a beauty to fields and the patterns they create, even those that are now just greened and not meadowed.  Their boundaries create these patterns across the land, with hedges standing out compared to those that are just fenced.  From where we now were, the foreground of these patch-worked fields all emerald green in low early winter light fed the eye toward distant gently rising hills, some with a dusting of snow crowning their tops.  Overhead a Red Kite majestically played in the breeze, its bronzed colour standing out as flashes of sunlight caught its wing tips.  It felt good to be out. 

Patch-worked fields

The footpath led past Gorn Farm where a small herd of black cattle met us in a field.  They ran this way and that, keeping their distance but always inquisitive.  Flashes of sunlight added depth to the landscape, accentuating the smooth curved contours of near fields, with snow-capped hills adding perspective of height to the scene.  Away to our north the pyramidal profile of Moel y Golfa and the Breiddin stood out on the horizon, with green fields and speckled patches of white sheep as foreground.  Even relatively low heighted hills can give excellent views and especially so in winter light. 

The distant Breiddin on the right

From this approach it’s an easy route to the summit of Gorn Hill with good signposting and gates indicating the way.  The high point is close to the public footpath, and easy to reach.  The summit has two options vying for high point, with LIDAR confirming the highest.  For me this was another day without taking summit data with the Trimble, which is becoming the norm, this is partly due to the inordinate amount of time that even one data set can incur and having previously LIDARed the hill, this would suffice for its numerical data. 

Eryl heading toward the summit of Gorn Hill

I soon joined Eryl on the summit having used the Trimble as a hand-help GPS device to indicate what field the summit was in and then what out of the two options the high point of the hill was.  We stayed on top for a while, taking a number of photos and chatting.  It was good to be out on a hill with Eryl, something that has been neglected for a number of years. 

The summit of Gorn Hill

From the summit we backtracked to the gate that had given us access into the high field and joined up with the public footpath heading down the hill toward the easterly realms of Llanidloes.  Our continued route down was now on a steepening field and as we lost height the town was edged in sunlight nestled in its low lying plain and formed a perfect foreground with distant snow-capped hills beyond. 

Looking down on Llanidloes

We stopped on a number of occasions on our decent, and chatted about all manner of things, many of times now gone and those distant hills never to be visited again.  This is one of the customs of increasing age where memory fulfills what was once expectation.

Our route took us onto the Gorn Lane and from here it was only a left turn and a minute or so’s walk to where Eryl and Rita live.  A cup of tea and delicious meal was soon on the table; a perfect end to a very fulfilling couple of hours on the hill. 

   

Survey Result: 

 

Gorn Hill 

Summit Height:  326.4m (LIDAR)  

Summit Grid Reference:  SN 96895 84496 (LIDAR) (summit relocation)

Bwlch Height:  278.1m (LIDAR)

Bwlch Grid Reference:  SN 97747 83851 & SN 97747 83848 (LIDAR) 

Drop:  48.3m (LIDAR)

Dominance:  14.80% (LIDAR)

 

 

For further details please consult the Trimble Survey Spreadsheet

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