Mapping Mountains – Trimble Surveys – Carnedd Wen

 

02.07.21  Y Gaer (SJ 204 155) 

Y Gaer (SJ 204 155)

As its name implies this hill has the remains of an ancient hill fort on its summit area, however nowadays these remains are barely discernible to the untrained eye.  Whereas many such remains are prominent with their embankments and ditches still on grand display, this particular Y Gaer just has the last vestiges of a slight rise still on view.  This is no more than a little bump that is easily bi-passed in favour of the higher ground near-by. 

This higher ground is positioned at a small covered reservoir which is circular and sits atop a raised grass slope.  The ground leading up to the base of the raised grass slope is natural, whereas the raised grass slope and the covered reservoir are man-made, with the line between the natural ground as its base and the artificially raised ground relatively easy to pinpoint. 

I’d visited this hill once before in August 2015 in the company of Alex Cameron during a hill bagging day.  On that day I placed the Trimble on the highest ground at the top of the raised grass slope at the immediate base of the bricked section of the covered reservoir.  This was at the top of the artificially raised ground and not at natural ground at its base.  Today I wanted to rectify this and gather data from the highest remaining natural ground. 

Gathering data during the first summit survey of Y Gaer with the Trimble GeoXH 6000 placed on the top of the artificially raised ground leading to the exposed part of the covered reservoir

Since originally surveying this hill LIDAR has become available and gives coverage for this hill’s summit and bwlch, and prior to my re-visit I analysed LIDAR and built contours up for where the natural ground became man-made.  By doing so the position and height of the remaining natural ground can be found, this exercise also showed where the high point of the ancient hill fort is positioned.  During the re-survey I planned to gather data at these two points, the highest of which would then be listed as the summit of this hill. 

LIDAR image of Y Gaer (SJ 204 155)

If wanting a quick visit to the summit of Y Gaer this is easily accomplished from its east.  This is the approach Alex and I took six years ago.  This eastern approach is from the top of a narrow lane where a car can be safely left.  A gate then gives access to the field where the summit of the hill is situated. 

From this point it is only a short walk to the top of the hill, and once there I assessed the lay of land at the immediate base of the steep rising grassed slope leading to the top of the covered reservoir.  Having decided the highest remaining natural ground I soon positioned the Trimble to gather data and sat on the other side of the covered reservoir as the equipment quietly beeped away collecting individual datum points. 

Gathering data during the second summit summit of Y Gaer with the Trimble GeoXH 6000 placed at the highest remaining natural ground at the base of the artificially raised ground leading to the exposed part of the covered reservoir

Once allotted data were gathered and stored I re-positioned the equipment at the high point of what remains of the ancient hill fort, this is a few metres from the base of the covered reservoir and is now no more than a slight undulation. 

Gathering data at the high point of the ancient hill fort

The Trimble GeoXH 6000 set-up position at the high point of the ancient hill fort

During data collection I stood below the equipment and watched as an occasional vehicle appeared on the narrow lane below, otherwise all was quiet.  This was the fourth of ten hills visited with Alex six years ago, today it was the last of five as afternoon commitments and a forecast of potential heavy rain and thunder dictated that I now needed to head back home, and once the Trimble was closed down and packed away I retraced my route back to the car and did just that. 

 

Survey Result: 

 

Y Gaer

Summit Height:  129.3m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SJ 20417 15566 (Trimble GeoXH 6000) (summit relocation confirmed) 

Bwlch Height:  91.2m (LIDAR)

Bwlch Grid Reference:  SJ 21177 15977 (LIDAR)

Drop:  38.2m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance: 29.51% (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

 

For details on the 1^st survey of Y Gaer

 

For further details please consult the Trimble Survey Spreadsheet

 

 

 

 

 

Mapping Mountains – Trimble Surveys – Carnedd Wen

 

02.07.21  Quarry Field (SJ 183 147) 

Quarry Field (SJ 183 147)

Prior to visiting this hill I had analysed its numerical data via LIDAR and confirmed it as a P20 Sub-Twmpau.  I had also looked at its uppermost enclosed field on the Tithe map for an appropriate name to use for that of the hill.  This walk also fitted nicely in to a circuit of five hills I could visit during the morning as due to afternoon commitments I needed to be home by 1.00pm.

LIDAR image of Quarry Field (SJ 183 147)

By the time I parked close to Cil Bach farm, under a convenient large tree giving a shaded spot to leave my car, the heat of the morning was increasing and with a forecast of possible late afternoon showers and thunder, I was glad of the excuse of those afternoon commitments and to get home before any heavy rain materialised. 

At the time of the Tithe the upper field of this hill was named Cae Bryn (no doubt documented by an English scribe as it is written as Cae Brin).  This would be an appropriate name to use for this small heighted hill, but as ever; if I could find the local farmer I was sure this name would either be confirmed or a current name given. 

Leaving my car I walked the short distance up the narrow lane to where a track veered left, following this gave access to the upper field which was planted with wheat.  I noticed this when driving toward the hill as its upper section shimmered in the light against a slight breeze.  Wheat fields are a delight to encounter; usually they have good vehicle tracks leading across them, and thankfully near to where I emerged next to the field a vehicle track headed up cresting the upper part of the hill close to its high point. 

As I walked up the vehicle track leading through the wheat I noticed Cwm Farm below.  I was in view of this farm, therefore did not want to linger at the summit however delightful wheat fields can be. 

Once near the high point I zeroed in to the summit position using the Trimble as a hand-help GPS unit with the ten figure grid reference produced via LIDAR leading me to the high point.  Once at the summit I set the Trimble up on top of my rucksack, which gives it elevation above its immediate surrounds and acts as an improvised tripod.  I quickly measured the offset between its internal antenna and the ground at its base and waited for the 0.1m accuracy level to be attained before data should be logged.  Once this appeared on the equipment’s screen I pressed ‘Log’ and walked the short distance back to the vehicle track. 

During data collection I sat on one of the tracks submerged beside the wheat.  I’d done something similar on previous occasions whilst surveying; these have usually been at bylchau, it doesn’t happen very often at a summit.  Whenever it does, be it summit or bwlch, it always brings a smile to my face as it is an unusual place to find oneself; sitting submerged in a field full of maturing crops.  This is not something that I imagine happens to many people and especially when one considers the purpose of the situation, but purpose and situation sometimes dictate and today that is exactly what happened. 

My view whilst waiting for the Trimble to gather data

Time out during data collection!

Considering its position the Trimble attained its 0.1m accuracy level remarkably quickly and gathered its five minutes of allotted data without any complaint, as sometimes when satellite reception is not good it squeals in anger and frustration! 

Gathering data at the summit of Quarry Field 

Once five minutes of data were gathered and stored I closed the equipment down, took a few photographs and packed it away.  Turning away from the summit I headed down the vehicle track amongst the wheat, thinking that a few minutes later I would be back at my car.  However, soon after leaving the summit a farm vehicle came chugging its way up the near gravelled track, and by the time I was out of the wheat it was making its way toward me.  My luck was certainly in as it was the local farmer; Richard Morris from Cil Farm. 

I talked with Richard for 15 minutes or so, it turned out that he used to go to school with my old boss and was friends with another ex-work colleague who lived in Meifod.  He also knew other friends I have from the village. 

Richard explained that he grew up in this community and farmed all his life, but only took over this field three years ago.  He knew the upper field as the Quarry Field after the disused small quarry near-by.  I mentioned the name Cae Bryn to him, which he had never heard.  I explained where I had been and the hills visited, and he then told me that he is also the local farmer for my previously visited hill, which is positioned at SJ 171 137, he told me its name is Dol Gron. 

Richard Morris of Cil Farm

When back home I checked the Ordnance Survey series of Six-Inch maps and there under the hill positioned at SJ 171 137 is an old house named Ddol-gron, with the near wood also named as Coed Ddol-gron.  Dol Gron is translated in to English as the Round or Rounded Meadow, an apt description of the hill and especially so for its upper section. 

Thanking Richard for his time I waited for him to continue down the gravelled track before I followed on foot.  I was back at my car at just before 10.50am, the walk and survey and meeting Richard had taken 50 minutes and proved very enjoyable and importantly gave names for the last two hills I had visited.  Only one hill remained for my morning’s little hill foray; this was Y Gaer (SJ 204 155) which I wanted to re-survey as during my previous visit the Trimble was placed on top of the earthen section of a covered reservoir and as this is a relatively recent man-made construct it should not be included in the height of a hill, therefore I now wanted to gather data from natural ground at its base.

 

Survey Result: 

 

Quarry Field (significant name change)

Summit Height:  109.5m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SJ 18332 14741 (Trimble GeoXH 6000) 

Bwlch Height:  86.6m (LIDAR)

Bwlch Grid Reference:  SJ 18549 14551 (LIDAR)

Drop:  22.9m (Trimble GeoXH 6000 summit and LIDAR bwlch) (100m Sub-Twmpau addition)

Dominance: 20.89% (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

 

For further details please consult the Trimble Survey Spreadsheet

 

 

 

 

 

 

 

Mapping Mountains – Trimble Surveys – Carnedd Wen

 

02.07.21  Dôl Gron (SJ 171 137) 

Dôl Gron (SJ 171 137)

I’d often wondered about visiting this hill, it isn’t great in height and relatively easy to visit if opting for the convenience of a minor road that ends just to the east of its summit.  I’d been saving it for a murky winter’s day when the higher tops were cloaked in clag, but the opportunity to visit and combine it with other hills during a pleasant and unrushed morning’s bagging could not be missed. 

Prior to visiting I’d analysed the hill’s numerical data with LIDAR.  Building up the contours until an accurate summit and bwlch height and position were ascertained.  Each position was noted, but I only planned on surveying the summit. 

LIDAR image of Dôl Gron (SJ 171 137)

Dôl Gron; a name later given me by the local farmer, was the third of a planned five hills to visit during the morning.  Afternoon commitments meant that I wanted to get home by 1.00pm and this also fitted nicely with the weather forecast, which gave the prospect of afternoon showers and the possibility of thunder. 

I parked at the end of the paved minor lane that winds its way up toward Clolyn.  By now the early morning blanket of cloud had been replaced by high white cloud and patches of blue sky giving increasing warmth.  A gate led to the start of a vehicle track which emerged on to a large field, this was my way up the hill.  The track continued around the lower base of the hill, I soon left it and followed dried hoof prints up a steep rising bank. 

The ground levelled off beside a fence which had an open gate giving access to another field and rising ground leading toward the high point of the hill.  Beside the fence the remains of a dead tree poked up from the earth, it made an attractive addition to the foreground with the summit of the hill beyond. 

The summit is just beyond the rounded field in the background

When building up the contours with LIDAR it was evident that the upper part of this hill had two tops, the farther being the higher and also the one that gives the better view.  I was soon at the summit, which even without the aid of the ten figure grid reference produced by LIDAR would be easy to pinpoint.  Soon the Trimble was set up gathering its allotted data. 

Gathering data at the summit of Dôl Gron

During data collection I stood downhill of the equipment to its west taking in the view across the Afon Efyrnwy to the small community of Meifod with Gallt yr Ancr rising beyond.  I’d visited this hill when the stay at home restrictions became keep local, which enabled exercise to be taken approximately five miles from one’s home.  It proved an excellent last hill to visit after combining a number on a good circular walk.  Today it rose above Meifod with its easterly forested slopes hiding the delightful wooded path leading to its steep summit cone.  The hills in this area are certainly good, with my second hill of the morning; Broniarth Hill (SJ 168 128) across the intervening valley to the south catching flashes of sunlight which highlighted its upper forested slopes. 

The Afon Efyrnwy and Gallt yr Ancr rising above the small community of Meifod

I could have easily remained on the summit of Dôl Gron for a while longer, at least waiting for the Trimble to gather data gave opportunity to linger and savour the view, but I still had two hills to visit and so once data were gathered and stored, I closed the equipment down, packed it away and followed my inward route down the hill to my awaiting car.  The walk and survey had taken 35 minutes and by the time I’d arrived back at my car the temperature was increasing giving warm and humid conditions, an ideal combination for those predicted thunder storms later in the day. 

 

Survey Result: 

 

Dôl Gron (significant name change)

Summit Height:  165.8m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SJ 17143 13703 (Trimble GeoXH 6000) 

Bwlch Height:  109.7m (LIDAR)

Bwlch Grid Reference:  SJ 17539 13499 (LIDAR)

Drop:  56.2m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance: 33.87% (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

 

For further details please consult the Trimble Survey Spreadsheet

 

 

 

 

 

Mapping Mountains – Trimble Surveys – Carnedd Wen

 

02.07.21  Broniarth Hill (SJ 168 128) 

Broniarth Hill (SJ 168 128)

By the time I arrived at my designated parking spot the deep blued grey cloud of early morning was now lightened with small breaks heralding the onset of warmer conditions to come.  I had already visited Moel y Sant (SJ 152 107) and with another four hills planned, all of which only entailed short walks and surveys of their summits, I was looking forward to a continued morning’s bagging and surveying local hills before afternoon and evening commitments took me homeward. 

I’m not a fan of forested hills, occasionally they can make for an adventure or two, but in the main my enthusiasm is not heightened.  This is shown when I look through my maps as each hill is circled and the ones visited given a small line through the circle, not surprisingly many of the unvisited hills are those whose summit is forested and this was so with Broniarth Hill.  However, logs on the Hill Bagging website indicated an easy ascent with good views from the summit, something the map does not suggest. 

Prior to visiting this hill I had spent time analysing it and the other four hills on the morning’s bagging agenda via LIDAR; this is a resource that is proving indispensable for producing accurate numerical data, and the combination of surveying with the Trimble adds that important on-site element. 

LIDAR image of Broniarth Hill (SJ 168 128)

I opted for an ascent from the east following a part of Glyndŵrs Way and had parked my car and was walking toward the hill by 8.10am.  The cooling air from my earlier ascent of Moel y Sant had quickly been replaced by warming and humid conditions.  The route was indeed easy and gave a pleasantly quiet approach to the hill. 

Summer brings succulent growth and life to the hills and this was all too evident on my approach, with long grasses swaying in the slight breeze, mature trees laden with their greened leafs, a myriad of insects darting this way and that and colourful butterflies flitting between patches of sunlight.  It was a joy to be out on the hill and the route ahead led on a path across a field beside a wood, down to a connecting bwlch, where to the left the watered depths of Llyn Du stretched westward out of sight. 

Llyn Du

Ahead of the slight dip a narrow path led directly up steepening ground.  I had wondered if my route was further to the right but had fortunately decided to continue losing a little ground to see whether it continued from the dip, it did, and I was soon plodding my way up with Red Admirals spiralling around the path adding splashes of colour when they landed with their blacks and reds giving contrast to the greened surrounds. 

The path ahead leading up steepening ground

The path continued uphill with trees on each side and gave for a lovely walk to the summit.  Eventually it led to an open area and a wide forest track.  Ahead was a rounded knoll which was the remaining summit of the hill.  Either side of the knoll were wide forest tracks, the construction of which looked as if it had obliterated the natural summit.  Close by was a bench, which on hills of similar height usually is a welcome addition.  Seeing it I knew where I’d be when the Trimble was gathering summit data! 

The path through the wood

Standing on the summit there was indeed a good view and soon the Trimble’s internal antenna was aligned with the high point and placed on top of my rucksack, with the measurement offset between it and the ground below noted, and soon it was beeping away collecting its individual datum points.  The beeping is quiet, but it is a sound that I’ve become accustomed to and one that I find rather reassuring.  I suppose it tells me that an expensive bit of kit is still working! 

Gathering data at the summit of Broniarth Hill

During data collection I couldn’t resist sitting on the bench and enjoyed my few minutes rest whilst scribbling all necessary information in my surveying notebook.  Once all detail was noted I stood near to the bench and looked north-east down the tree lined northerly slopes of Broniarth Hill to the meanderings of the Afon Efyrnwy as it gently flowed eastward.  Rising above on its opposite banks stood Moel y Main, a fine hill with a goof profile, as indeed are many of the hills in this vicinity. 

The view north-east from beside the bench at the summit of Broniarth Hill

Soon the five minutes allotted data collection was up and I scampered back to the Trimble to close it down, take a few photographs, admire the view to the south, pack the equipment away, get my rucksack back on and head down the forest track to the narrow path leading down the hill. 

Patches of sunlight on Llyn Du

By the time I emerged out of the trees on to the open field giving the view of Llyn Du the cloud was breaking with patches of blue heralding increasing warmth.  My third hill of the day was only a short drive away and after negotiating the narrow lanes I was soon at the starting point leading up Dol Gron (SJ 171 137). 

 

Survey Result: 

 

Broniarth Hill

Summit Height:  265.0m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SJ 16861 12824 (Trimble GeoXH 6000) 

Bwlch Height:  218.2m (LIDAR)

Bwlch Grid Reference:  SJ 17303 12961 (LIDAR)

Drop:  46.8m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance: 17.66% (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

 

For further details please consult the Trimble Survey Spreadsheet

 

 

 

 

 

 

 

Mapping Mountains – Trimble Surveys – Carnedd Wen

02.07.21  Moel y Sant (SJ 152 107) 

LIDAR summit image of Moel y Sant (SJ 152 107)

With a forecast of rain and the prospect of thunder for the weekend, but with Friday giving in the main dry conditions and especially so in the morning, and with afternoon and evening commitments I wanted to take advantage of the conditions and get out on the hill. 

I needed to be home by 1.00pm at the latest, so I looked through maps to find a number of local hills that I had previously not visited.  I knew of a hill close to Meifod that I had contemplated visiting for a number of years, but still had not done so.  This I later found is known locally as Dol Gron (SJ 171 137).  Near to this hill were two others that again I had not been up.  There was also an unvisited sub close by and not far away the summit of Y Gaer (SJ 204 155), which although previously Trimbled needed another survey as data were gathered from the top of a covered reservoir, which being a relatively recent man-made construct should not be included in the height of a hill.  These would give me five hills to visit, and all could be surveyed.  All entailed relatively short walks and little driving between.  If I set off early in the morning I was sure to be back home by my 1.00pm cut-off time. 

After studying these hills on the map I LIDARed each in turn, and noting all available summit and bwlch grid references I set my alarm for 5.45am and was parked and walking up my first hill of the day by just past 7.00am. 

My first hill; Moel y Sant is positioned between Cyfronydd to its south and Meifod to its north and the other four hills would take me on a route via car in a north-easterly direction ending on Y Gaer.  Hopefully conditions would remain dry as showers were forecast as the heat of the day increased. 

I contemplated approaching Moel y Sant from the east following a track toward Cefn-du farm, this would give opportunity to survey its connecting bwlch which interpolation and a spot height places close to a number of farm buildings.  However, I decided on an easier route to the hill from the west. 

This route led up a good gravelled track that leads past a house and later a caravan before bisecting, with one track heading toward a builders merchants and the other toward a high mast that then gives access toward the summit of the hill. 

Looking toward the mast near the summit of Moel y Sant

Just past the point where the track bi-sects

There was a slight coolness in the air as I walked up the track, I did wonder if the hill would be enveloped in mist, but thankfully the cloud base was around 400m, as when height was gained I looked north-eastward and cloud just skimmed the top of the Beiddin.  The cloud was deep blued grey which soon lightened in colour, it hung across the sky and only broke as the morning progressed and the heat of the day increased. 

Grey early morning that soon gave way to warm sunshine

My companions for the first part of the walk

I soon attracted the attention of a flock of sheep.  They gathered and walked toward me, bleating as they did so, all freshly sheared, some with blackened faces and lower legs, others all white.  They approached so far and stopped, looking inquisitively toward me, wondering no doubt who I was and whether I was there to feed them.  They followed me up the track for a while and then found munching on grass to be more appealing. 

The sheep followed me for quite a distance up the track

The track led to a gate and continued beyond toward the high mast.  The bleating of the sheep had now been replaced by intermittent birdsong, which delicately meandered across the morning skies. 

The route to the summit just beyond the mast

From the mast compound a vehicle track led across a field through an open gate toward the summit of the hill.  The high point was easy to distinguish and is positioned in long grass close to an outcrop of gorse.  Soon the Trimble was set up gathering its first data set of the day. 

Gathering data at the summit of Moel y Sant

Moel y Sant was a good hill to start the morning’s proceedings on, I doubt whether it has many visitors, probably just the local farmer and an occasional wandering hill bagger.  I like hills like this.  They give a rewarding feeling.  Although rather nondescript they have few pretenses, but in all seasons they can give a contented hour on the hill. 

The Trimble GeoXH 6000 set-up position at the summit of Moel y Sant

Once the Trimble had gathered its allotted data, I packed it away and reversed my inward route back to my car.  It had taken 50 minutes to visit and survey the hill.  All was still quiet hereabouts as I sorted my gear and checked the map for the onward route toward my second hill of the day; Broniarth Hill (SJ 168 128). 

 

Survey Result: 

 

Moel y Sant

Summit Height:  273.3m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SJ 15224 10771 (Trimble GeoXH 6000) 

Bwlch Height:  201m (spot height)

Bwlch Grid Reference:  SJ 15721 10601 (spot height)

Drop:  72m (Trimble GeoXH 6000 summit and spot height bwlch)

Dominance: 26.45% (Trimble GeoXH 6000 summit and spot height bwlch)

 

 

For further details please consult the Trimble Survey Spreadsheet 

Mapping Mountains – Trimble Surveys – Carnedd Wen

02.05.21  Gaer Fawr (SJ 223 129, previously Trimbled)

One of the paths leading to the summit of Gaer Fawr

My cousin; Lynn had suggested a walk to the top of Gaer Fawr a number of weeks ago.  She had visited this hill previously and wanted to visit when the hill is carpeted in bluebells.  It was also where she scattered her late husband’s ashes.  Since doing this she hadn’t revisited, so as well as a bit of good cousin catch up time it was also an opportunity for Lynn to reflect. 

The forecast for the day predicted showers breaking out mid-afternoon and therefore it seemed we had no rush to make an early morning start.  We were walking by 11.30am having squeezed my car in to the last remaining space in the first of two parking possibilities on the narrow lane just to the west of the hill’s summit. 

Not yet carpeting the whole hill but still beautiful to see

However, the sky already gave signs that the morning’s sunshine was quickly being replaced by cooler climes with grey shower cloud soon appearing.  I’d visited this hill twice before, the first with Alex Cameron in August 2015 and the second with Linda during the recent winter lockdown.  On the second visit Linda and I walked from our respective front doorsteps in Welshpool, and met at the top of the Windmill Lane for the continuing walk toward the hill. 

Today’s visit Lynn and I accessed the hill through one of the main entrances, but used a path I had not been on before that gained height near the south-westerly ridge of the hill.  As we set off up the hill dappled light still clung to the path with the wood that encloses the hill looking beautiful with fresh green leafed trees reaching for the sky and the bluebells giving colour to the foreground. 

The morning's sunshine quickly replaced by shower cloud

There were a number of people on the hill, some picnicking, others out with dogs, but the one common thing mentioned were the bluebells and that it was still a week or so too early before the whole hill is carpeted in their colour.  However, they were there and although not in dramatic fashion, they added colour to our walk. 

The path slowly gained height through the wood weaving its way under the overhead canopy and beside a myriad of blue and white flowers.  I was glad Lynn had suggested this walk, my plan otherwise was more blogging, but a couple of hours in good company on a hill is always welcome. 

Lynn at the summit of Gaer Fawr

The summit area of Gaer Fawr is relatively open compared to the various paths that approach it, and when we arrived I visited the two places that vie for its highest point.  Lynn found the spot where David’s ashes had been scattered and I left her there to gather her thoughts whilst I contentedly wandered around the upper part of the hill. 

The bluebells at the summit area of Gaer Fawr

Lynn re-joined me a few minutes later and we continued down to where the terracotta wild boar is placed.  This is always a welcome site even if it is now sadly missing two of its ears! 

The terracotta wild boar

By now a few rain drops were reaching the hill and the earlier sunshine had been swept away and replaced by menacingly grey cloud.  At this point the rain did not materialise beyond a few drops, but ten minutes later it began again.  Being in the wood, we at least had a semblance of shelter; it didn’t seem to affect Lynn as she was happy stopping and looking at flowers, whilst I had my thoughts pinned on the car and getting back when still relatively dry. 

Thankfully what could have been a cloud burst never materialised and our progress back to the car became a leisurely plod.  Sitting on a bench, chatting, looking at flowers and soaking in the ambiance of the wood. 

 

Survey Result:

 

Gaer Fawr (significant name change)

Summit Height:  217.6m (converted to OSGM15, from previous Trimble GeoXH 6000 survey) 

Summit Grid Reference:  SJ 22394 12995 (Trimble GeoXH 6000 survey) 

Bwlch Height:  138.7m (LIDAR)

Bwlch Grid Reference:  SJ 21991 13145 (LIDAR)

Drop:  78.9m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance:  36.26% (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

 

For details on the 1^st survey of Gaer Fawr Hill

For details on the 2^nd survey of Gaer Fawr Hill

For details on the 4th visit to Gaer Fawr

 

 

For further details please consult the Trimble Survey Spreadsheet