Showing posts with label Nicola Morris. Show all posts
Showing posts with label Nicola Morris. Show all posts

Saturday, 1 May 2021

Mapping Mountains – Trimble Surveys – Carnedd Wen

 

25.02.21  Llwynderw Hill (SJ 196 036)

LIDAR image of Llwynderw Hill (SJ 196 036)

I’d visited this hill once before in June 2011 and on that occasion the circular walk from my home taking in its summit formed one of a number of preparation walks for the Fisherfield surveys conducted for The Munro Society.  Then I did not have a Trimble, now I do and the hill was within easy striking distance from my home for a socially distanced lock down walk. 

Prior to this re-visit I had examined the details for the hill via LIDAR and noted an accurate height and position for both its summit and bwlch, with the natural summit being prioritised over the higher field boundary. 

Llwynderw Hill is positioned overlooking the Severn Valley and can be easily accessed from the convenience of the Montgomeryshire Canal.  My walking companions for the day were Linda and Nic and we met beside the wharf next to Morrisons car park. 

Linda, Tommy the dog and Nic on the canal towpath

The ducks were shining their bright coloured feathers in the morning sunshine as we leisurely made our way out of town following the canal towpath.  This was a change from what has become the norm of using the Cefnyspin and Frochas Lanes to access Y Golfa and its adjacent hills.  And however beautiful and welcome that route had become it was good to have a change of scene. 

Beyond Belan Lock the opposite side of the canal was awash in dazzling Snowdrops, they shined back at us all whitened standing upright in the late February sunshine as the first warmth of spring continued to take hold. 

Admiring the Snowdrops

We left the canal towpath after almost three miles and headed west up a steepening narrow lane which although highlighted yellow on contemporary Ordnance Survey 1:25,000 Explorer maps, is not recommended to drive up as one steep section is particularly daunting where the paved section has crumbled leaving a ramp.  Thankfully, today we were walking and not attempting to drive. 

Nearing the high point of the narrow lane we accessed a field next to a gate and continued up toward the high point.  The girls found a sheltered spot to indulge in lunch, whilst I sauntered over to the summit zeroing in on the ten figure grid reference produced from LIDAR analysis for the natural high point.  I soon had the Trimble set-up gathering data and re-joined the girls whilst it quietly beeped away collecting its individual datum points. 

Gathering data at the natural summit of Llwynderw Hill

After five minutes data were gathered and stored, I closed the equipment down and sauntered back to join Linda and Nic sitting in the sunshine for a bite to eat and lots of good conversation. 

Nic engaging in an unusual self examination exercise!

We left the field and joined a public footpath leading to Cefn-hilin farm and then onward down the continuation of the lane to another public footpath which headed across fields, over a brook and then beside forestry.  It was beautiful.  It was also quiet and gave a sense of detachment from the world of Covid and lock down restrictions, with increasing warmth as late morning gave way to early afternoon. 

Our route toward Lower Pwll and the Red Lane

Friendly horse

The footpath led down to Lower Pwll and the Red Lane, which we happily followed past the entrance to Powis Castle and eventually back to our inward route on the canal towpath. 

The greens of late February

The walk took about seven hours and was very enjoyable and relaxed with good company, views, lots of laughs and another summit Trimbled.  It had been another good day on the hill!

 

Survey Result: 

 

Llwynderw Hill (significant name change)

Summit Height:  237.9m (converted to OSGM15, Trimble GeoXH 6000) 

Summit Grid Reference:  SJ 19600 03662 (Trimble GeoXH 6000) (summit relocation confirmed)

Bwlch Height:  159.7m (LIDAR)

Bwlch Grid Reference:  SJ 18827 03989 (LIDAR)

Drop:  78.3m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance:  32.89% (Trimble GeoXH 6000 summit and LIDAR bwlch) (Lesser Dominant deletion)

 

 

For further details please consult the Trimble Survey Spreadsheet

 

 

Friday, 23 April 2021

Mapping Mountains – Trimble Surveys – Carnedd Wen


22.02.21  Quarry Field (SJ 155 075), Cefn Uchaf (SJ 157 072) and Y Golfa (SJ 182 070, previously Trimbled)

Quarry Field (SJ 155 075)

With rain clearing by mid-morning and forecast sunshine for the remaining daylight hours Linda and I set off later than initially planned.  We were walking up the Cefnyspin Lane by 11.45am with increasing amounts of blue dominating the sky overhead. 

On our last walk up the Cefnyspin and Frochas Lanes a slight dusting of snow and a crisp chill in the air lingered all day, whilst today it was spring like with lambs in the adjoining fields and the first warmth of the year.  It was a joy to be out. 

Heading up the Cefnyspin Lane

A few minutes after starting up the Frochas Lane there was a shout from behind and there was Nic with Tommy the dog, it was good to see her and she joined us for the remainder of the day. 

The Frochas Lane is delightful; as it follows the crest of a broad ridge and the views from it are extensive.  It gains height steadily and looks out on a typical mid-Wales scene of grazing fields, hedgerows and gently shaped hills.  During the latest lock down this route to Y Golfa and other near hills has been a release from the confines of the imposed restrictions.  It has never disappointed giving good options for circular walks.  Today we wanted to extend the walk to two lower hills beyond Y Golfa, both could be Trimbled, and then double back over the higher summit.  With our later start we knew we’d be on the higher summit close to sunset and descending the lower part of Llanerchydol Drive as it was turning dark. 

First warmth of Spring

We left the Frochas Lane at an intersection and joined a track leading up to a green lane which headed confidently toward the bwlch between the two hills beyond Y Golfa.  I’d analysed these with LIDAR prior to today’s walk and as they don’t possess individual names on contemporary Ordnance Survey maps I’d also examined the Tithe map for the name of the bounded land where each summit is situated. 

Quarry Field 

Our first hill; Quarry Field rose steeply ahead, its greened and pastured south-easterly flank looked inviting set against a deep blue sky as background.  By the time we started up the hill I was in plodding mode and watched Linda and Nic steadily pull ahead.  As I reached the summit they were sitting on a fallen bow getting ready to have lunch. 

Heading up Quarry Field

Lunch time

The summit was under a branch of a tree overlooking a small and now disused quarry.  I had no intention to gather five minutes of data and needed a well-earned rest and the warmth and view dictated there was no need to rush proceedings. 

Y Golfa from the ascent of Quarry Field

Once the Trimble had attained the 0.1m accuracy level before data should be logged, I pressed ‘Log’ and sat on a near bow of a tree, ate a banana and slumbered in the gorgeous weather.  The first warmth after winter’s hold is welcome and to experience this when on a hill is always special and today was no exception.  I sat and waited for the Trimble to gather 15 minutes of data before closing it down, taking a few photos and packing it away.  It was now time to head off toward our second hill. 

Gathering data at the summit of Quarry Field

The Trimble set-up position at the summit of Quarry Field

This was relatively near and once we had back-tracked to the bwlch between it and Quarry Field it was only a short distance to its summit.  As I assessed the lay of land and then compared my chosen position for Trimble placement to that produced by LIDAR, Linda and Nic sat a few metres away looking out toward a sumptuous view taking in Cadair Idris, the Aran and the Y Berwyn. 

I again had no intention for a quick data collection and this time gathered 13 minutes of data at the summit, with the Tithe map naming the upper enclosed field as Cefn Uchaf.  These two hills were a welcome addition to a walk up Y Golfa and can be relatively easily combined with their higher neighbour. 

Gathering data at the summit of Cefn Uchaf

Once the Trimble was closed down and packed away we headed back to the green lane which took us down to an old lane heading up the western flank of Y Golfa.  This was the route Linda and I had taken on our last walk, so the map was now back in my rucksack and all we had to do was steadily gain height toward a welcome rest outside the Golf Club. 

On our way up we found a myriad of lost golf balls which Linda happily bagged for her Dad.  This route adds a little wilderness to the walk and beyond the top of the old green lane our route turned to a path beside stunted trees before petering out amongst the browns of copious amounts of bracken.  This land is at contrast to that immediately above as the bracken and patches of gorse are quickly displaced with manicured greens and fairways. 

We spent about 20 minutes sitting outside the Golf Club, chatting with the person whose family lives there whilst Tommy the dog and the dog from the Golf Club whizzed around the practice putting green, running this way and that, playing to their hearts content. 

At the summit of Y Golfa

When we left the Gold Club a chill has set in, the sun had lowered and the magical late afternoon colour had been replaced by a gentled hue heralding the onset of dusk.  We were soon beside the trig pillar at the summit of Y Golfa, we lingered for a few minutes for a last look out toward the west and those higher mountains and away we went down the easterly ridge. 

Our route down proved a lovey walk as dusk was quickly overtaken by darkness, and was a perfect ending to the day. 

 

Survey Result: 

 

Quarry Field (significant name change)

Summit Height:  268.5m (converted to OSGM15, Trimble GeoXH 6000) (significant height revision) 

Summit Grid Reference:  SJ 15530 07552 (Trimble GeoXH 6000) 

Bwlch Height:  209.6m (LIDAR)

Bwlch Grid Reference:  SJ 16489 07601 (LIDAR)

Drop:  58.9m (Trimble GeoXH 6000 summit and LIDAR bwlch) (200m Sub-Twmpau reclassified to 200m Twmpau)

Dominance:  21.93% (Trimble GeoXH 6000 summit and LIDAR bwlch)


 

 

Cefn Uchaf (significant name change)

Summit Height:  261.8m (converted to OSGM15, Trimble GeoXH 6000 survey) 

Summit Grid Reference:  SJ 15739 07264 (Trimble GeoXH 6000 survey)

Bwlch Height:  235.1m (LIDAR)

Bwlch Grid Reference:  SJ 15745 07416 (LIDAR)

Drop:  26.6m (Trimble GeoXH 6000 summit and LIDAR bwlch) (200m Twmpau reclassified to 200m Sub-Twmpau)

Dominance:  10.18% (Trimble GeoXH 6000 survey summit and LIDAR bwlch)


 

 

Y Golfa

Summit Height:  341.4m (converted to OSGM15, from previous Trimble GeoXH 6000 survey) 

Summit Grid Reference:  SJ 18247 07086 (from previous Trimble GeoXH 6000 survey) 

Bwlch Height:  175.1m (LIDAR)

Bwlch Grid Reference:  SJ 16645 06017 (LIDAR)

Drop:  166.3m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance:  48.72% (Trimble GeoXH 6000 summit and LIDAR bwlch)


 

 

For details on the survey of Y Golfa

For details on the 2nd visit to Y Golfa

For details on the 3rd visit to Y Golfa

For details on the 4th visit to Y Golfa

For details on the 5th visit to Y Golfa

For details on the 6th visit to Y Golfa

 

 

For further details please consult the Trimble Survey Spreadsheet

 

 

 

  

Saturday, 20 March 2021

Mapping Mountains – Trimble Surveys – Carnedd Wen

 

17.01.21  Yr Allt (SJ 242 100) 

Yr Allt (SJ 242 100)

With the forecast set fine for the day I sauntered out on the canal towpath for a socially distanced walk with friends who I met at 9.15am.  Our plan was to visit Yr Allt, which is one of my two go-to hills during lockdown.  This and Y Golfa can easily be visited from my front door and both give good varied walking, with Yr Allt having a number of options to and from its summit. 

Heading through the wood above the Flash Leisure Centre

Today we headed from the Flash Leisure Centre to the wood that overlooks it.  From here we accessed the field above Corfield’s Farm and then it was only a short walk avoiding winter mud across another field to the farm yard, where a footpath led to another wood. 

I hadn’t used this particular footpath before and once beyond the farmyard it led through a deciduous wood, then over a large field and down leaf cluttered slopes leading to a small book.  The path led over the brook and continued toward the Gungrog Fawr Lane.  I was now on land that I had investigated during the previous lockdowns and from here continuing public footpaths led all the way to the summit of Yr Allt. 

Gaining height with Welshpool in the valley below

It was good to be out with the girls, all were quicker than me, but I was more than happy to saunter at my own pace enjoying the ever expanding view.  Nic brought Tommy the dog who was flying across the fields investigating all manner of places and having the time of his life; oh to have the energy of a little dog! 

Nearing the summit of Yr Allt

By the time we reached the summit a slight chilled breeze blew across the hill, so we de-camped on the fallen bow of a tree in the dip between the high point and the trig pillar to have a rest and bite to eat. 

After visiting the trig pillar we wandered down the connecting south-westerly ridge where two gates gave access to the top of the Rhallt Lane, from here we sauntered down the lane to the canal towpath and then home.  It proved a great way to spend three hours.

 

Survey Result: 

 

Yr Allt

Summit Height:  231.3m (converted to OSGM15, from previous Trimble GeoXH 6000 survey)

Summit Grid Reference:  SJ 24240 10005 (from previous Trimble GeoXH 6000 survey)

Bwlch Height:  125.9m (LIDAR)

Bwlch Grid Reference:  SJ 21855 08773 (LIDAR)

Drop:  105.4m (Trimble GeoXH 6000 summit and LIDAR bwlch) 

Dominance:  45.57% (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

 

For details on the first Trimble GeoXH 6000 summit survey of Yr Allt

For details on the second Trimble GeoXH 6000 summit survey of Yr Allt

For details on the Trimble GeoXH 6000 bwlch survey of Yr Allt

For details on a third visit to the summit of Yr Allt

For details on a fourth visit to the summit of Yr Allt

For details on a sixth visit to the summit of Yr Allt 

 

For further details please consult the Trimble Survey Spreadsheet

 

Wednesday, 15 July 2015

Mapping Mountains – Trimble Surveys – Gwaun Ceste



09.07.15  Little Hill (SO 171 537), Gwaun Ceste (SO 158 555) and Little Hill (SO 142 537)  

Little Hill (SO 171 537)

Between the A 44 at Llanfiangel Nant Melan (SO 180 581) in the north and the B 4594 at Painscastle (SO 167 462) in the south is a hinterland of tranquillity that takes in a spine of 500m hills, with the lands of Gwaun Ceste rolling onward to those of Glascwm Hill and Red Hill.  Interspersed amongst these are a number of 400m peaks that dot the landscape like watchful outliers, many are rather forgotten places with their summits seldom trodden. 

It was one of these 500m peaks; Gwaun Ceste and two outlying 400m peaks; both named Little Hill that we had our sights on for today.  I was out with Nicola who quite fancied an afternoon in the hills away from the rigours of life, where one can find stresses and strains disappearing into a happy emotional state of contentment.

We parked in the hamlet of Glascwm where two cars can be left adjacent to a telephone kiosk.  The day was set fine with a radiant blue sky overhead that beat warmth down upon the land.  As boots were donned a friendly dog wagged its tail our way for playful patting.

Meeting the friendly dog at Glascwm

Walking up the steep lane heading east conversation only stopped when the gradient suddenly increased with height being gained relatively quickly.  At the top of the road we turned left and joined a vehicle track and followed it up toward a fence corner, here we rested.

From the fence corner we followed a sheep track toward the summit of our first of two hills named Little Hill, we soon abandoned the sheep track and wandered over the upper part of the hill which predominated in the rich emeralds of bilberry, with an occasional clump of heather and grass interspersed, all was easy going.

By now Nic had been introduced to the Trimble and she confidently strode out to find the high point, when reached we found that this hill has two distinct possibilities for its summit, each only a small rise above its surroundings and about 100 metres apart.  We walked over the westerly high point and set the Trimble up on the easterly high point first.

Heading for the easterly high point of Little Hill

As the Trimble gathered its customary five minutes of data we chatted as the remnants of early summer bird song lingered on the breeze.  As the end of the five minute data collection neared we approached the Trimble and I showed Nic where to press the key to stop the equipment.  Once noted she posed for a photo and off we went to gather data on the westerly high point and then down toward the connecting bwlch.

The Trimble set-up position on the easterly high point of Little Hill with the westerly high point in the background

On our way to the bwlch Nic accustomed herself to the theory of drop and the words of bwlch, saddle and col.  Once at the area of the bwlch she happily wandered off to find where the Trimble should be placed, once found she pointed to the spot and then set up our picnic place near to where the Trimble would be gathering data.

As we sat on a blanket happily laughing away with yummy sandwiches, cheese, biscuits and bargies I smiled as I hadn’t done something like this for quite some time.  The female of the species does seem to have an uncanny knack of creating refinement and comfort, this was something that was gratefully accepted on my part and enjoyed. 

Gathering data at the bwlch of Little Hill

After picnic and Trimble time we packed away our little camp and headed up toward the summit of Gwaun Ceste, during the walk Nic checked her phone a few times as her daughter was staying with her Mum in Welshpool and she had times and weekend activities to arrange, which included the possibility of going to a music festival in Llanfyllin.  As another bleep signalled an incoming message she quickly replied and told me what she had written, I couldn’t help but laugh and insisted upon taking a photo. 

An excellent precedent

The ground up Gwaun Ceste steepened and we followed another vehicle track amongst the summer growth of fern that soon butted against heather, this in time took us toward the summit.

The view south on the ascent of Gwaun Ceste

And the view up the hill as the path steepens

The summit of Gwaun Ceste has a trig pillar on it which stands forlorn amongst a sea of heather with its immediate land at its base consisting of a small patch of grass; it is this land that is the hill’s high point.  By now Nic was setting up the file in the Trimble prior to it being put on the ground to gather data, and as it did so we lay in the heather and looked out on the beautiful landscape of mid Wales.

Our onward route took us past Llyn-y-waun which shone with its flatbed of grass, reed and cotton grass.  This small pool is adjacent to a conifer plantation that has now been felled leaving its remnants forlornly forgotten in an untidy confusion of tree slump and stripped land.

The summer lushness of Llyn-y-waun

As we walked toward the second Little Hill the giants of south Wales lined up ahead of us with the peaks of the Black Mountains, Bannau Brycheiniog, Fforest Fawr and Mynydd Du shimmering in a slight dulled grey silhouette.  By now it was enjoyably warm and Nic posed with the Trimble for a calendar shot.

Time to get Nic's tummy trending on the Internet

The next point to survey was the critical bwlch of the second Little Hill; this was easily found and is on a path beside an ancient tumulus named Giant’s Grave on the Ordnance Survey map.  Once Nic had set up the file I placed the Trimble down on the ground to gather data and then as the last of the datum points were collected Nic pressed ‘Done’ and I took the customary photographs of its set-up position for future reference if needed.

The Trimble set-up position at the bwlch of our second Little Hill

Only one summit remained and we had the convenience of another earthen vehicle track to follow up its northern slopes, to reach the high point we left the track and stomped through heather.  As the Trimble gathered its data we lay in the heather, chatted and laughed and took some selfies.

Gathering data at the summit of our second Little Hill

Before leaving the hill we wandered over to a small undisturbed pool which nestled to the south-east of the summit.  This was another luxuriant place with its dabbled sheen set against the greens of summer growth.

The second pool we found was as enchanting as the first

A small path left the sides of the pool and soon joined another track that headed down toward our previously visited bwlch, from here a track led down past Upper Blaen-bedw and over a dried stream bed. 

On the track heading back to Glascwm

Nearing the end of another lovely walk

As the track continued we passed a herd of cows munching in the warmth, looking down on us from the steep earthen sides of the track, beyond were sheep with fattened lambs watching us as we slipped past on our way back to Glascwm and the awaiting car.

Being watched

It had been a very enjoyable day spent in the company of Nic, and she had picked up the intricacies of drop and the operating of the Trimble very easily, which was a bit scary.  We had a great journey back blasting out Pink Floyd as the illuminated greens of evening summer light cast down upon the land.


Survey Result:


Little Hill

Summit Height:  469.2m (converted to OSGM15)

Summit Grid Reference:  SO 17175 53749 (summit relocation)

Bwlch Height:  422.7m (converted to OSGM15, from subsequent Trimble GeoXH 6000 survey)

Bwlch Grid Reference:  SO 16357 54404 (from subsequent Trimble GeoXH 6000 survey)

Drop:  46.5m

Dominance:  9.91%




Gwaun Ceste

Summit Height:  542.1m (converted to OSGM15, from subsequent Trimble GeoXH 6000 survey)

Summit Grid Reference:  SO 15821 55547 (from subsequent Trimble GeoXH 6000 survey)

Bwlch Height:  376.9m (LIDAR)

Bwlch Grid Reference:  SO 16953 58220 (LIDAR)

Drop:  165.2m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance:  30.47% (Trimble GeoXH 6000 summit and LIDAR bwlch)




Little Hill

Summit Height:  490.4m (converted to OSGM15)

Summit Grid Reference:  SO 14276 53724

Bwlch Height:  446.6m (converted to OSGM15)

Bwlch Grid Reference:  SO 14029 54397

Drop:  43.7m

Dominance:  8.92%






For further details please consult the Trimble survey spreadsheet click {here}