Showing posts with label Pen Aran Hill. Show all posts
Showing posts with label Pen Aran Hill. Show all posts

Monday, 4 October 2021

Mapping Mountains – Significant Name Changes – Y Trichant – The 300m Hills of Wales

 

Pen Aran Hill (SO 137 888) 

There has been a Significant Name Change to a hill that is listed in the Y Trichant – The 300m Hills of Wales, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

Pen Aran Hill (SO 137 888)

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

Y Trichant The 300m Hills of Wales.  Welsh hills at or above 300m and below 400m in height that have 30m minimum drop, with an accompanying sub list entitled the Sub-Trichant with the criteria for this sub category being all Welsh hills at or above 300m and below 400m in height with 20m or more and below 30m of drop.  The list is authored by Myrddyn Phillips, with the Introduction to the list and the renaming of it appearing on Mapping Mountains on the 13th May 2017. 

Y Trichant - The 300m Hills of Wales by Myrddyn Phillips

The hill is adjoined to the Cilfaesty group of hills, which are situated in Mid and West Wales (Region B, Sub-Region B1), and it is positioned with minor roads to its north-west and south-east and the A489 road to its north-east, and has the village of Ceri (Kerry) towards the north-east.                     

The hill appeared in the original 300m Welsh P30 list on Geoff Crowder’s v-g.me website under the transposed name of Penarron, with an accompanying note stating; Name from buildings to the South.


Penarron368mSO138891136214Name from buildings to the South.

 

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 or as in this instance transpose the name of a farm and use it for that of the hill.  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

After visiting the summit of this hill I called at Penarron farm where I met Ivor and Rhydian Powell who were encouraging three cows in to a trailer.  I volunteered my help and tapped one on its hind quarters, they were soon all safely in, more from the expertise of the two people I had just met rather than from the encouragement that I had given. 

Ivor and Rhydian Powell

I explained my interest in the hill and its name, and Ivor and then Rhydian told me that the adjacent and slightly lower field is known as the Pike and that the upper field where I had been surveying is known as the Long Field.  We spent a number of minutes talking about the hill but they needed to get away with the three cows, before doing so they told me the person who I should go and talk to was Phil Davies who was in the adjacent field cutting silage and who had farmed these hills all his adult life. 

Philip Davies

Therefore I drove back up the road, parked in the pull-in spot where I had left my car to visit the hill and went through the opposing open gate and down the field where Phil was in his tractor cutting great swathes of grass.  I waited for him to head my way and waved over, he soon stopped and we chatted for ten minutes of so.  Phil is aged 78 and this hill is a part of the land that he farms, he told me the names of the two opposing fields, the Pike and the Long Field and the Big Field for where we now were.  I asked him about the name of the hill and he said he knows it as Pen Aran Hill, with the composition of Pen Aran taken from the Ordnance Survey Six-Inch series of maps. 

Extract from the Ordnance Survey series of Six-Inch maps

Therefore, the name this hill is now listed by in the Y Trichant – The 300m Hills of Wales is Pen Aran Hill and this was derived from local enquiry. 

 

The full details for the hill are: 

Group:  Cilfaesty 

Name:  Pen Aran Hill 

Previously Listed Name:  Penarron 

OS 1:50,000 map:  136

Summit Height:  368.0m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SO 13710 88852 (Trimble GeoXH 6000) 

Bwlch Height:  324.6m (LIDAR) 

Bwlch Grid Reference:  SO 13561 88411 (LIDAR) 

Drop:  43.4m (Trimble GeoXH 6000 summit and LIDAR bwlch) 


Myrddyn Phillips (October 2021)

 

 

 

 

 

 

 

 

Saturday, 2 October 2021

Mapping Mountains – Summit Relocations – Y Trichant – The 300m Hills of Wales


Pen Aran Hill (SO 137 888) 

There has been a Summit Relocation to a hill that is listed in the Y Trichant – The 300m Hills of Wales, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

Pen Aran Hill (SO 137 888)

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

Y Trichant- The 300m Hills of Wales – Welsh hills at or above 300m and below 400m in height that have 30m minimum drop, with an accompanying sub list entitled the Sub-Trichant with the criteria for this sub category being all Welsh hills at or above 300m and below 400m in height with 20m or more and below 30m of drop.  The list is authored by Myrddyn Phillips, with the Introduction to the list and the renaming of it appearing on Mapping Mountains on the 13th May 2017. 

Y Trichant - The 300m Hills of Wales by Myrddyn Phillips

The name the hill is listed by is Pen Aran Hill and this was derived from local enquiry, and it is adjoined to the Cilfaesty group of hills, which are situated in Mid and West Wales (Region B, Sub-Region B1), and it is positioned with minor roads to its north-west and south-east and the A489 road to its north-east, and has the village of Ceri (Kerry) towards the north-east.

Extract from the Ordnance Survey 1:50,000 Landranger map

When the original 300m height band of Welsh P30 hills was published on Geoff Crowder’s v-g.me website, this hill was listed under the name of Penarron with a 368m summit height, based on the spot height that appears on the Ordnance Survey 1:50,000 Landranger map and which is positioned at SO 13837 89083. 

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 Pen Aran Hill

The summit area of this hill consists of three tops with LIDAR analysis giving two of these tops within 1mm of each other: 

 

367.818m at SO 13829 89079 

367.819m at SO 13711 88853 

 

These two tops and an intermediary third top were surveyed with the Trimble GeoXH 6000, resulting in the following heights and positions: 

 

367.942m at SO 13828 89079 

367.252m at SO 13754 88924 

368.031m at SO 13710 88852 

 

As the 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 to when the high point is positioned in a different field, to a different feature such as a conifer plantation, within a different map contour, a different point where a number of potential summit positions are within close proximity, when natural ground or the natural and intact summit is confirmed compared to a higher point such as a raised field boundary or covered reservoir that is considered 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 old summit position of Pen Aran Hill

The Trimble GeoXH 6000 gathering data at the new summit position of Pen Aran Hill
 
Therefore, the summit height produced by the Trimble GeoXH 6000 survey is 368.0m and this is positioned at SO 13710 88852, this position is not given a spot height on the contemporary Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map, and is approximately 240 metres south-westward from where the previously listed summit is positioned. 

 

The full details for the hill are:

Group:  Cilfaesty

Name:  Pen Aran Hill 

OS 1:50,000 map:  136

Summit Height:  368.0m (converted to OSGM15, Trimble GeoXH 6000) 

Summit Grid Reference (New Position):  SO 13710 88852 (Trimble GeoXH 6000) 

Bwlch Height:  324.6m (LIDAR) 

Bwlch Grid Reference:  SO 13561 88411 (LIDAR) 

Drop:  43.4m (Trimble GeoXH 6000 summit and LIDAR bwlch) 


Myrddyn Phillips (October 2021)

 

  

Friday, 17 September 2021

Mapping Mountains – Trimble Surveys – Cilfaesty

 

14.07.21  Pen Aran Hill (SO 137 888) 

Pen Aran Hill (SO 137 888)

This was my third hill of the morning and having left a high narrow lane where I had parked for the ascent of Bryn Pant y Drain (SO 178 885), I drove down to the A489 road and the small community of Kerry, where I then headed south and found the minor road that took me up to my next hill of the day, which having made subsequent place-name enquiries is being listed as Pen Aran Hill. 

As with many smaller heighted hills, the upper part of Pen Aran Hill is no more than a relatively high field, albeit a field that gives an extended view.  Prior to visiting I had examined this hill via LIDAR and found two tops separated by 1mm in height, each placed at or beside a perimeter hedge and fence.  I planned on visiting the two tops and survey each. 

LIDAR image of Pen Aran Hill (SO 137 888)

I parked close to a gate giving access to the high field, with another gate directly opposite already open.  I later found that Philip Davies was in the opposite field cutting grass for silage.  Philip is the local farmer and confirmed the field name for where the summit of this hill is situated as the Long Field and the field where he was working as the Big Field, and he knows the hill as Pen Aran Hill.  The Pen Aran part of this name is a composition taken from the Ordnance Survey series of Six-Inch maps, with the composition on contemporary Ordnance Survey maps being Penarron. 

Philip had also cut grass in the Long Field and as I accessed it through a gate, great swathes extended across the upper hill in lines leading to its high point.  It was only a short distance to the first southerly LIDAR summit.  I stopped and quickly assessed the lay of land before continuing to the farther northerly LIDAR summit.  It is the latter that many people recognise as the high point of this hill.  On my way I came to an intermediary top, again I stopped and looked back and tried to assess its height relative to the other two summits.  It seemed that three surveys were necessary to attempt to split these tops. 

Continuing to the farther northerly top I used the Trimble as a hand-held GPS unit to zero in to the ten figure grid reference produced by LIDAR.  This point of the hill has a hedge signifying the field boundary.  The Trimble was soon set up and within a few minutes it was activated to gather data. 

Gathering data at the northerly top of Pen Aran Hill

During data collection I stood below the equipment and spotted a tractor in the opposing field, this was Philip who I later visited.  Once data were gathered and stored I headed back to the intermediary top and again set the Trimble up and collected a second data set.  This top is beside a fence and gives extensive views. 

Gathering data at the central top of Pen Aran Hill

It was only a short distance from here back to the most southerly of the three tops, which like the northerly is beside a mature hedge.  The Trimble was soon set in place gathering its third data set from this hill. 

Gathering data at the southerly top of Pen Aran Hill

The hedge gave way a little lower to a perimeter fence and during data collection I stood and looked out toward what would be my fifth and six hills of the day, each like this one were positioned beside a narrow road leading across their upper ridge.  These two hills are now listed by the same name; Top Field, with the name of the higher of the two positioned at SO 114 890 found from local enquiry and the lower which is positioned at SO 110 879 found from the Tithe map. 

As the Trimble gathered data this proved a lovely place to stand and have the world pass me by.  Compared to earlier in the morning cloud had now built up with the sun casting light and shade with shadows moving across hillsides adding depth to perspective.  I was in no particular rush, but did want to visit Penarron farm which is positioned just below the upper field.  I hoped I could find the local farmer and confirm an appropriate name for this hill and therefore once the Trimble had gathered allotted data I closed it down, packed it away and made my way through the swathes of cut grass back to my car. 

I was soon parked at the entrance to Penarron farm and walking in to the back yard, where Ivor and Rhydian Powell were encouraging three cows in to a trailer.  I volunteered my help and tapped one on its hind quarters, they were soon all safely in, more from the expertise of the two people I had just met rather than from the encouragement that I had given. 

Ivor and Rhydian Powell

I explained my interest in the hill and its name, and Ivor and then Rhydian told me that the adjacent and slightly lower field is known as the Pike and that the upper field where I had been surveying is known as the Long Field.  We spent a number of minutes talking about the hill but they needed to get away with the three cows, before doing so they told me the person who I should go and talk to was Phil who was in the field cutting silage and who had farmed these hills all his adult life. 

Therefore I drove back up the road, parked in the pull-in spot where I had left my car to visit the hill and went through the opposing open gate and down the field where Phil was in his tractor cutting great swathes of grass.  I waited for him to head my way and waved over, he soon stopped and we chatted for ten minutes of so.  Phil told me the names of the two opposing fields, the Pike and the Long Field and the Big Field for where we now were.  I asked him about the name of the hill and he said he knows it as Pen Aran Hill. 

Philip Davies

Before leaving I asked if I could take some photographs and he kindly got out of his tractor and stood in the sun beside it.  I thanked him for his time and waved my goodbyes and walked back up the field to the open gate. 

The day was progressing well with three hills visited and surveyed and one new hill name and three field names documented.  The fourth hill of the day; Cold Weston (SO 141 907); a name given on the Tithe map, required driving back in to Kerry and then a mile or so north-west before heading up the access track to Weston farm where I hoped to find the local farmer to ask permission to park and visit the summit, and hopefully confirm the name of the hill. 

 

Survey Result: 

 

Pen Aran Hill (significant name change)

Summit Height:  368.0m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SO 13710 88852 (Trimble GeoXH 6000) (summit relocation confirmed)  

Bwlch Height:  324.6m (LIDAR)

Bwlch Grid Reference:  SO 13561 88411 (LIDAR)

Drop:  43.4m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance:  11.79% (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

 

For further details please consult the Trimble Survey Spreadsheet