Monday, 12 January 2026

Mapping Mountains – Trimble Surveys – Carnedd Llywelyn


16.11.25  Foel Lus (SH 732 761) 

Foel Lus (SH 732 761)

In October 2018 I visited the lower hills of the north-eastern Carneddau during a 7 hour walk, taking in six hills, all of which were surveyed.  From the most westerly of these; Allt Wen (SH 745 772) I looked out across the intervening plain toward Foel Lus.  On that day the sky merged with the sea, all a glorious blue and Foel Lus peered back at me as a great inviting rounded lump of a hill.  I promised myself that one day I would visit.  Seven years later and that promise has finally been fulfilled.

I’d spent the previous evening in the company of the Steads, with Darrin celebrating his 60th birthday with wife Lisa, sons Tom and Will, and Tom’s girlfriend Lizzie.  It’s always good to see Lisa and Darrin, with past travels around Peru and Bolivia and lots of hill walks a reminder of our friendship.  The evening was great fun with lots of chat and silly games, all of which brought many laughs.

Just before breakfast I sorted my gear and checked the route to the hill, which was easy from where we were staying as it was only a matter of following the road around and then down, turning right and continuing up the ever increasingly steep Mountain Lane to its end where a rough track continues up toward Ty’n-y-ffrith farm.  I left the Steads having thanked them for a lovely evening as they were heading off for a walk to Aber waterfall before Will caught the afternoon train back to Leeds.

There were already two cars parked at the end of the lane when I arrived.  Beside one was a customised E-bike with some of the widest tyres imaginable, its owner was sitting on a near bench enjoying the view whilst having a bite to eat.  I sauntered over and chatted with him for a few minutes before gathering my rucksack and heading on the circuitous route around the hill.

According to the contours on my OS map, where I parked was around 250m high and with the hill being 360.0m in height, the walk wasn’t going to be too taxing.  That suited me as I was in a relaxed mode of travel with few worries fluttering around inside my head, and except for beating darkness on the drive home I wasn’t in a rush, which even on the slowest of slow walks I could easily accomplish.  Therefore, I happily headed off following a broad path heading initially north-westward around the hill. 

On the initial section of path

The weather forecast was good for the day, although high cloud only thinned later on and therefore there were few flashes of direct sunlight on the autumnal colours that still lingered amongst the land.

Away out to sea the elongated profile of Ynys Seiriol floated on the near horizon with the flatness of water seemingly enfolding Foel Lus.  There’s a special quality to walking beside the coast, this is prevalent whether beside the sea or elevated above it.  Its flat realms seem to add unexpected perspective to any view, and today my increasingly elevated position above the north Wales coast was one to be savoured.

The path continued contouring around the hill to its north, with the view now opening up to the north-east toward Allt Wen and its adjacent hills bringing memories of the walk I did in 2018.  On my way I passed a number of memorial plaques adorning the near rock, beside one was a small cave, and another a bench where no doubt people come, sit, remember and out across the expanse of sea disappearing in to the beyond. 

The memorials beside the path

As I crested the furthest north-easterly point of the path and just as I headed southward on it, a young guy appeared walking toward me from a slightly lower path, I said hello and tried to engage him without much luck as only a monosyllabic reply came my way.  Later as I plodded up the path leading to the summit he was already heading down, again little came my way except for a grunt of a ‘yes’ when I smiled and asked if he’d already been to the top.  I suppose it takes all sorts and perhaps he just wanted the solitude without a customary hello from a passing stranger. 

Gogarth is the distance with Allt Wen on the right

I took my time on the uphill and savoured the environment and rather ironically; the solitude!  Just before the high point I diverted to a prominent cairn giving views forever downward and across the sea.  The top of the hill was not far away and when I arrived it was for all too brief a moment bathed in direct sunlight emanating from a dappled and milky sky that clung above Tal y Fan to my south, with the ridges of the higher Carneddau peaks still cloud enshrouded beyond. 

The Gwynt y Môr wind farm

I stayed on top for a few minutes, having previously LIDARed the hill I did not bring the Trimble.  I’ve found the need to survey hills dimming in my old age, and have started to experience and enjoy the freedom that not always carrying the Trimble can give.  However, I found myself assessing the lay of land close to the summit windshelter for where I considered the high point of the hill was situated.  This made me smile as even without the Trimble it seems some habits are hard to break. 

The summit of Foel Lus

On my way down I said hi to a cyclist who was making good progress heading up.  He’d just overcome one of the steepest parts of the path and all without getting off his bike.  Two others had already passed me on my way up; I had then turned and watched them rhythmically curving their way down.  They seemed at one with the path as they swung left and then right, forming a pattern as the one behind quickly repeated what the other in front had just done.  I admired their skill, as I did with the cyclist now heading up the hill.  I remember my mountain bike days when downhill brought excitement and trepidation; this always seemed to be over too quickly before the next tiring uphill was tackled.  This gave little time for photography, which was one of the main reasons for concentrating more on hill walks.  Still, the outdoors is enjoyed by people doing many different activities and cycling off road brings its own exciting form of pleasure. 

Foel Lus from the south

I all too quickly left the rock strewn path and found my way on to a greened canvass which continued southward, here I veered right and followed a steepening rough track down to where my car was parked. 

Ynys Seiriol with the last remnants of autumnal colour in the foreground

Foel Lus certainly didn’t disappoint and proved an ideal way to end an excellent weekend. 

 

Survey Result: 

 

Foel Lus 

Summit Height:  360.0m (LIDAR) (significant height revision)  

Summit Grid Reference:  SH 73238 76184 (LIDAR)

Bwlch Height:  299.9m (LIDAR)

Bwlch Grid Reference:  SH 73386 75791 (LIDAR) 

Drop:  60.1m (LIDAR)

Dominance:  16.69% (LIDAR)

 

 

For further details please consult the Trimble Survey Spreadsheet 

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