Showing posts with label Cefn Cyfronydd. Show all posts
Showing posts with label Cefn Cyfronydd. Show all posts

Monday, 19 July 2021

Mapping Mountains – Significant Name Changes – 100m Twmpau

 

Cefn Cyfronydd (SJ 144 082) 

There has been a Significant Name Change to a hill that is now listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

Cefn Cyfronydd (SJ 144 082) on the left of photo

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Carnedd Wen group of hills which are situated in the south-eastern part of North Wales (Region A, Sub-Region A4), and it is positioned with a minor road to its north, the B4389 road to its north-west, the A458 road to its south-west and the B4392 road to its east, and has the small town of Llanfair Caereinion towards the west south-west. 

When the original 200m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the invented and transposed name of Pen-Cefn-cyfronydd, with an accompanying note stating; Name from buildings to the North and West.


Pen-Cefn-cyfronydd200cSJ146084125215/239Name from buildings to the North and West.

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

I first visited this hill in October 2011, on that occasion I asked a local farmer if I could visit the summit and if so, where would be best to park.  He directed me up an access track to a house that is positioned just below the summit.  During our conversation I asked about the name of the hill, he told me that it is known as Cefn Cyfronydd, which is also the name of one of the houses beside the access track. 

Colin Owen of Garth Vaughan farm

During a subsequent visit to this hill in March 2021 I called at Garth Vaughan farm where I met Colin Owen.  He was in a large barn looking after newly born lambs and we chatted for a number of minutes, I asked if I could use the track which shot straight up toward the higher part of the hill from the side of the barn and a few minutes later I was steadily plodding uphill.  After surveying the summit I descended back to Garth Vaughan and called over to Colin, he invited me in to the barn to see the newly born lambs with one mother giving birth to four lambs earlier in the morning.  During our conversation I asked about the name of the hill and he confirmed that he had heard it being called Cefn Cyfronydd. 

Therefore, the name this hill is now listed by in the 100m Twmpau is Cefn Cyfronydd, and this was derived from local enquiry. 

 

The full details for the hill are: 

Group:  Carnedd Wen 

Name:  Cefn Cyfronydd

Previously Listed Name:  Pen-Cefn-cyfronydd 

OS 1:50,000 map:  125

Summit Height:  199.1m (converted to OSGM15, Trimble GeoXH 6000)                                                           

Summit Grid Reference:  SJ 14459 08297 (Trimble GeoXH 6000) 

Bwlch Height:  150.6m (LIDAR) 

Bwlch Grid Reference:  SJ 14997 08587 (LIDAR) 

Drop:  48.5m (Trimble GeoXH 6000 summit and LIDAR bwlch) 

 

Myrddyn Phillips (July 2021)

 

 

 

 

 

 

 

Saturday, 17 July 2021

Mapping Mountains – Summit Relocations – 100m Twmpau

 

Cefn Cyfronydd (SJ 144 082) 

There has been a Summit Relocation to a hill that is now listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

Cefn Cyfronydd (SJ 144 082) on the left of photo

The criteria for the list that this summit relocation applies to are: 

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The name the hill is listed by is Cefn Cyfronydd and this was derived from local enquiry, and it is adjoined to the Carnedd Wen group of hills which are situated in the south-eastern part of North Wales (Region A, Sub-Region A4), and it is positioned with a minor road to its north, the B4389 road to its north-west, the A458 road to its south-west and the B4392 road to its east, and has the small town of Llanfair Caereinion towards the west south-west. 

When the original Welsh 200m P30 list was published on Geoff Crowder’s v-g.me website the height of the prioritised summit of this hill was estimated as c 200m and positioned at SJ 146 084, with an accompanying note stating; Two points of same height – other at SJ 144 083, with both heights based on interpolation of the two uppermost 200m ring contours that appear on the contemporary Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales. 

LIDAR summit image of Cefn Cyfronydd

The result produced by LIDAR analysis confirms the summit of this hill as under 200m in height and gives the previously listed non-prioritised summit as the higher, and as this summit has now been surveyed with the Trimble GeoXH 6000 it is this result that is being prioritised for listing purposes, and this comes within the parameters of the Summit Relocations used within this page heading, these parameters are: 

The term Summit Relocations applies when the hill’s high point is found to be positioned; in a different field, to a different feature such as in a conifer plantation, placed within a different map contour, to a different point where a number of potential summit positions are within close proximity, or when natural ground or the natural and intact summit of a hill is confirmed compared to a higher point such as a raised field boundary that is judged to be a relatively recent man-made construct, or a relocation of approximately 100 metres or more in distance from either the position of a map spot height or from where the summit of the hill was previously thought to exist. 

The Trimble GeoXH 6000 gathering data at the summit of Cefn Cyfronydd

Therefore, the summit height produced by the Trimble GeoXH 6000 survey is 199.1m and this is positioned at SJ 14459 08297, this is approximately 190 metres south-westward from where the previously prioritised summit is positioned. 

 

The full details for the hill are: 

Group:  Carnedd Wen 

Name:  Cefn Cyfronydd 

OS 1:50,000 map:  125

Summit Height:  199.1m (converted to OSGM15, Trimble GeoXH 6000)                                                           

Summit Grid Reference (New Position):  SJ 14459 08297 (Trimble GeoXH 6000) 

Bwlch Height:  150.6m (LIDAR) 

Bwlch Grid Reference:  SJ 14997 08587 (LIDAR) 

Drop:  48.5m (Trimble GeoXH 6000 summit and LIDAR bwlch) 

 

Myrddyn Phillips (July 2021)

 

 

 

 

 

 

 

Thursday, 15 July 2021

Mapping Mountains – Hill Reclassifications – 200m Twmpau and 100m Twmpau

 

Cefn Cyfronydd (SJ 144 082) – 200m Twmpau reclassified to 100m Twmpau

There has been a reclassification to the list of 200m Twmpau and 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

Cefn Cyfronydd (SJ 144 082) on the left

The criteria for the two listings that this reclassification applies to are: 

200m Twmpau – Welsh hills at or above 200m and below 300m in height that have 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 200m Twmpau by Myrddyn Phillips

100m Twmpau Welsh hills at or above 100m and below 200m in height that have 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The name the hill is listed by is Cefn Cyfronydd and this was derived from local enquiry, and it is adjoined to the Carnedd Wen group of hills which are situated in the south-eastern part of North Wales (Region A, Sub-Region A4), and it is positioned with a minor road to its north, the B4389 road to its north-west, the A458 road to its south-west and the B4392 road to its east, and has the small town of Llanfair Caereinion towards the west south-west. 

When the original 200m height band of Welsh P30 hills was published on Geoff Crowder’s v-g.me website, this hill was included in the main P30 list and listed with an estimated c 200m summit height, based on interpolation of its uppermost 200m ring contour that appears on the contemporary Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

However, it was not until LIDAR became available that the details for this hill could be accurately re-assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales. 

LIDAR image of Cefn Cyfronydd (SJ 144 082)

The result produced by LIDAR analysis gives this hill a 199.2m summit height, and as the summit has now been surveyed with the Trimble GeoXH 6000 it is this result that is being prioritised for listing purposes. 

The Trimble GeoXH 6000 gathering data at the summit of Cefn Cyfronydd

Therefore, the reclassification of this hill from 200m Twmpau status is due to LIDAR analysis and a subsequent Trimble GeoXH 6000 survey, resulting in 45.5m of drop, with a 199.1m summit height and a 150.6m bwlch height, with the summit height confirming its 100m Twmpau status. 

 

The full details for the hill are: 

Group:  Carnedd Wen 

Name:  Cefn Cyfronydd 

OS 1:50,000 map:  125

Summit Height:  199.1m (converted to OSGM15, Trimble GeoXH 6000)                                                          

Summit Grid Reference:  SJ 14459 08297 (Trimble GeoXH 6000) 

Bwlch Height:  150.6m (LIDAR) 

Bwlch Grid Reference:  SJ 14997 08587 (LIDAR) 

Drop:  48.5m (Trimble GeoXH 6000 summit and LIDAR bwlch) 

 

Myrddyn Phillips (July 2021)

 

 

 

 

 

 

 

Friday, 21 May 2021

Mapping Mountains – Trimble Surveys – Carnedd Wen


25.03.21  Cefn Cyfronydd (SJ 144 082), Cae’r Block (SJ 115 067) and Cae Coch (SJ 137 066)

Cae Coch (SJ 137 066)

I met some lovely people today.  Colin; who was tending new born lambs and kindly gave me permission to use a rack to access the first hill of the day, Gail; who cared for her mother and was out walking a friend’s dog on the delightful old green lane leading to Llanfair Caereinion, the woman from Gelli-gason who I’m afraid I didn’t note her name, she came out and we talked about my second hill of the day and she kindly gave directions toward Clyniarth where I met Anya and Eric and Carl the plasterer.  I stopped here for quite some time talking with Anya and Eric, who moved here 13 years ago and set up the Strawberry Skys Yurts business.  They then directed me onward toward Bryn Heolog where I met Meirion Davies; again we stopped and chatted for 20 minutes or so, such a lovely person, as indeed they all are.  To me, especially so in the times of Covid, human contact when on a hill walk can be a welcoming experience, and today on quiet tracts and forgotten footpaths each encounter was savoured. 

Today’s walk was planned the previous evening and as is the norm each hill was examined via LIDAR resulting in ten figure grid references for each summit and connecting bwlch with accurate heights also ascertained.  I’d visited these hills before, but these were quick hill bagging expeditions.  Today I wanted to explore the land combining each hill and in the process investigate some of the footpaths above Cyfronydd. 

LIDAR image of Cae'r Block (SJ 115 067)

I parked beside the A458 adjacent to the B4392 road heading toward Guilsfield.  From where I had parked, my first hill of the day; Cefn Cyfronydd was hidden from view but as I made steady progress up the B road its steepening slopes rose initially in manicured green pasture where lambs frisked in the morning sunshine and then brackened higher slopes with stunted woodland interspersed. 

When I’d previously visited this hill I asked a farmer if I could visit the summit and if so where would be best to park, he directed me up the access track to a house that sits just below the summit, telling me that the hill is known as Cefn Cyfronydd, which is also the name of a farm.  This hill has two tops vying for its high point and from where I had parked it took me nine minutes to visit both and arrive back at my car.  Today was a more leisurely experience. 

I contemplated accessing the hill from the same track which heads westward from the B road, but as I rounded a corner I decided to call in at Garth Vaughan farm where I met Colin Owen.  He was in a large barn looking after newly born lambs and we chatted for a number of minutes, I asked if I could use the track which shot straight up toward the higher part of the hill from the side of the barn and a few minutes later I was steadily plodding uphill. 

According to LIDAR the high point of Cefn Cyfronydd is positioned in its south-westerly 200m small ring contour, however LIDAR also gives the summit as just below this height.  I’ll have to wait for the Trimble result to confirm whether this hill is a 200m or a 100m Twmpau.  By the time I arrived at the high point a brisk breeze blew across its upper slopes.  I’d converted my walking trousers to shorts prior to setting out but was glad that I hadn’t discarded my spring fleece.  The summit overlooks a house which is the property at the end of the westerly heading access track.  As I set the Trimble up to gather data wafts of music from a radio slowly meandered across the hill with a workman outside the property, I didn’t want to disturb him or the occupant so stood downhill of the Trimble as its allotted data were gathered and stored. 

Gathering data at the summit of Cefn Cyfronydd

Having retraced my inward route back to Garth Vaughan I called over to Colin who confirmed the name of the hill and invited me in to the barn to see the lambs.  He had 800 ewes lambing and this morning one gave birth to four lambs, the second to do so during this season.  It was a pleasure meeting Colin ad I had to drag myself away as the walk had only just started and I had a few more miles to cover and two other hills to visit. 

Colin Owen

My next hill lay south-westward and I used footpaths and quiet country lanes to reach its lower slopes.  Each proved a delight, especially the footpaths, these wandered across greened fields, over trickling brooks, following an occasional old track and always connecting the land from one point to another.  Many are probably rarely used nowadays, but the stories they could tell from times long gone can only be imagined. 

I left the lane at the start of an old green track that headed up at a steady gradient.  I was later told that this track was a part of the old drover road between Llanfair and Welshpool.  It was slightly sunken and hemmed in by avenues of stunted trees.  It was a pleasure to be on it.  Sunshine, blue skies, distant views and solitude make a heady concoction and today whilst on this old green lane I mesmerised at its beauty. 

Looking down the old green lane

I met Gail and her friendly dog that she was walking for a friend toward the higher part of the old green lane.  We stopped and chatted for ten – fifteen minutes.  Away in the distance the Aran and Y Berwyn dominated the horizon whilst the intervening land rolled in ridges and valleys.  Before parting Gail stuck out her hand and I shook it.  This was the most natural thing to do and I did it without a thought of the last year and the encouragement not to do so.  It was only the second handshake that I had had in the last year. 

The high point of this hill, which the Tithe names the nearest enclosed field as Cae’r Block, is on the green lane.  As the Trimble gathered its allotted data I stood beside a tree and just enjoyed being there.  Life can become enriched my simple things and again blue skies, solitude, a friendly breeze and a hill can give comfort and contentedness beyond measure. 

Gathering data at the summit of Cae'r Block

From the summit of Cae’r Block I could simplify things and head for the near B road and use this toward the last hill of the day, but a number of footpaths led across country and these would no doubt be more pleasurable.  Therefore, I headed away from the summit on an earthen track leading down to the large house of Gelli-gason where I met the occupant.  We chatted outside for ten minutes or so, unfortunately she couldn’t help me with either a name for the hill or confirm its highest field name; ‘Glyn’s your man, he’s the farmer, he may know’ she said.  I left with more directions toward a track and a gate as I set off toward the Yurts at Clyniarth. 

The track leading down to Gelli-gason

Old public footpaths can become interesting things to try and follow and the onward route toward Clyniarth proved fun with a number of barb wired fences blocking any semblance of notion of a remaining public footpath.  However, with a little map study and field boundaries and hedges to use as indicators I eventually found my way to the gate giving access to Clyniarth. 

Cae'r Block from the footpath leading to Clyniarth

As I closed the gate I could hear a lot of knocking from inside the old house, I called out a few ‘hello’s’ and out came Anya, she was as surprised to see a walker as I was glad to see her and have another lovely conversation.  She was amazed that someone had tried to follow the footpaths from Gelli-gason telling me that in the 13 years that her and her husband; Eric, had been there she had only known of one other person who had used them. 

We were soon joined by two dogs and a cat and Carl the plasterer, we chatted about all manner of things.  It was a pleasure to just converse and enjoy the time spent with people, however fleeting. 

Anya and Carl the plasterer

Anya walked with me beyond Cryniarth to where the footpath continued toward Bryn Heulog and the upper field where Eric was building the foundation for another Yurt.  Anya and Eric had moved from London 13 years ago and set up Strawberry Skys Yurts.  The Yurts were placed in a beautiful place, amongst silver birch and other mixed trees.  Covid had struck the business severely as it has for all hospitality and tourism, but they are fully booked for when the current restrictions are lifted. 

I left Anya and Eric with directions to a gate which gave an onward route toward Bryn Heulog where I met Meirion Davies who was reversing his Landranger in the farm yard when I arrived.  He stopped, got out and we chatted.  He touched upon the history of Bryn Heolog and the adjacent Upper Bryn-Elen before we talked about the farm of Hafod Seller, where Meirion was born.  I could have stopped and chatted with Meirion forever, but I still had one last hill to visit and as I walked through the farm yard and up the adjacent lane, Meirion drove up and waited for me, parked and opened the near gate to direct me toward a stile and the continuation of my walk. 

Meirion Davies

By now I was in a contented state.  I’d met and chatted with so many people.  All were unexpected encounters, and all were delightful.  My onward route took me past a small deciduous wood with sheep scampering across the blazed green fields with the dark silhouetted profile of my last hill; Cae Coch rising impressively to my east. 

The darkened silhouette of Cae Coch

I veered right just before Rhos Fawr, this was advised me by Meirion who said that the route from this farm now had a section with barb wire over it.  Rhos Fawr is where my descendants used to farm from; with Richard Phillips, my Great Great Great Grandfather there at the time of the Tithe. 

My Great Great Great Grandfather; Richard Phillips, farming from Rhos Fawr at the time of the Tithe

In time I made it onto an access track which led toward the B4385.  I was glad I hadn’t followed this from the summit of Cae’r Block.  I slowly plodded my way on its tarmac before skirting left up a steepening road which led to Pen-yr-herber and Hafod Seller. 

The lane was steep and I rested occasionally and whilst doing so savoured the spring warmth and colour.  Bi-passing Pen-yr-herber I followed what my Ordnance Survey 1:25,000 Explorer map gives as a yellow road indicating it to be paved, when in fact it is now no more than a track. 

Approaching Cae Coch

Accessing the upper slopes of Cae Coch through a gate I headed up with the old wood beside this hill’s higher slopes looking invitingly proud in the afternoon sunshine.  Cresting the edge of the wood the summit was just over a fence, by now the breeze was almost fierce as it skimmed across the upper hill.  This was invitingly welcome, it added intensity to an otherwise slumbered scene. 

The wood adjacent to the summit of Cae Coch

The Trimble was soon quietly beeping away collecting its data.  I stood beside the fence, checked my downward route on the map, took photographs and stared down at the buildings of Hafod Seller which were just below this part of the hill.  Once I closed the Trimble down and packed it away I stood and took more photos with high whitened cloud skidding across an otherwise blue sky.  It was a marvellous spot to be on such a day. 

Gathering data at the summit of Cae Coch

Leaving the summit I sauntered down the hill’s southern slopes and used a gate instead of the fence to gain access into the field which took me down to my initial access gate.  Once back on the track I followed this down to where it became paved and shortly left it to use footpaths across fields and the railway track to rejoin this morning’s inward route. 

 

Survey Result: 

 

Cefn Cyfronydd (significant name change)

Summit Height:  199.1m (converted to OSGM15, Trimble GeoXH 6000) (200m Twmpau reclassified to 100m Twmpau) 

Summit Grid Reference:  SJ 14459 08297 (Trimble GeoXH 6000) (summit relocation confirmed) 

Bwlch Height:  150.6m (LIDAR)

Bwlch Grid Reference:  SJ 14997 08587 (LIDAR)

Drop:  48.5m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance:  24.37% (Trimble GeoXH 6000 summit and LIDAR bwlch)


 

 

Cae’r Block (significant name change)

Summit Height:  232.6m (converted to OSGM15, Trimble GeoXH 6000) 

Summit Grid Reference:  SJ 11567 06755 (Trimble GeoXH 6000) 

Bwlch Height:  199.0m (LIDAR)

Bwlch Grid Reference:  SJ 11283 06315 (LIDAR)

Drop:  33.6m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance:  14.43% (Trimble GeoXH 6000 summit and LIDAR bwlch)


 

 

Cae Coch (significant name change)

Summit Height:  263.3m (converted to OSGM15, Trimble GeoXH 6000) 

Summit Grid Reference:  SJ 13715 06610 (Trimble GeoXH 6000) 

Bwlch Height:  193.7m (LIDAR)

Bwlch Grid Reference:  SJ 13757 06183 (LIDAR)

Drop:  69.6m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance:  26.44% (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

 

 

For further details please consult the Trimble Survey Spreadsheet