Showing posts with label Emsger. Show all posts
Showing posts with label Emsger. Show all posts

Tuesday, 28 July 2026

Mapping Mountains – Significant Name Changes – 30-99m Twmpau


Emsger (SM 651 226) 

There has been a Significant Name Change that is retrospective to a hill that is listed in the 30-99m Twmpau, with the summit height and its location, the drop and status of the hill derived from a Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.                       

Emsger (SM 651 226)

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

30-99m Twmpau - Welsh hills at or above 30m and below 100m in height that have 30m minimum drop, with an accompanying sub list entitled the 30-99m Sub-Twmpau, with the criteria for this sub category being all Welsh hills at or above 30m and below 100m in height with 20m or more and below 30m of drop.  The list is authored by Myrddyn Phillips, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

30-99m Twmpau by Myrddyn Phillips

The hill is adjoined to the Garn Fawr group of hills, which are situated in the south-western part of South Wales (Region B, Sub-Region B1), and it is positioned with the nearest minor road on the mainland to its east north-east, and has the city of Tyddewi (St David’s) on the mainland towards the east north-east.

When the original 30-99m height band of Welsh P30 hills compiled by Myrddyn Phillips were published on Geoff Crowder’s v-g.me website, this hill appeared under the transposed name of Em-sger or South Bishop, which is a prominent name that appears adjacent to this island on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map.  Soon afterward Myrddyn Phillips compiled the dominant and remote listings, and in these original compilations the name of Emsger was prioritised. 

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

Both names are applicable to the same island, with South Bishop originating from English and Emsger probably originating from Old Norse, with the latter documented in 1717  incorporating a Welsh word as Carreg Emskar (Dictionary of the Place-Names of Wales by Hywel Wyn Owen and Richard Morgan and published by Gomer Press in 2007).

Therefore, the prioritised name this hill is now listed by in the 30-99m Twmpau is Emsger, and this was derived from a variety of sources, including the contemporary Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map. 

 

The full details for the hill are:

Group:  Garn Fawr

Name:  Emsger 

Previously Listed Name:  Em-sger or South Bishop   

OS 1:50,000 map:  157

Summit Height:  33.8m (converted to OSGM15, Trimble GeoXH 6000) 

Summit Grid Reference:  SM 65116 22619               

Bwlch Height:  N/A (sea level) 

Bwlch Grid Reference:  N/A (sea level) 

Drop:  33.8m (Trimble GeoXH 6000) 

 

Myrddyn Phillips (July 2026) 

Friday, 3 June 2016

Mapping Mountains – Significant Height Revisions – Y Pellennig, 30-99m Twmpau and Y Trechol - The Dominant Hills of Wales


Emsger (SM 651 226)

There has been a Significant Height Revision to a hill that is listed in the Y Pellennig30-99m Twmpau and Y Trechol - The Dominant Hills of Waleswith the summit height and its location, the drop and status of the hill derived from a Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.

Emsger (SM 651 226)

The criteria for the three listings that this height revision affects are:

Y Pellennig –The Remotest Hills of Wales - Welsh hills whose summit is at least 2.5km from the nearest paved public road and the hill has a minimum 15m of drop.  The list is co-authored by Myrddyn Phillips and Aled Williams and is available as a downloadable e-booklet or print-booklet version on Mapping Mountains Publications with the up-to-date master list available on Mapping Mountains to download in Google Doc format. 

Y Pellennig - The Remotest Hills of Wales by Myrddyn Phillips and Aled Williams

30-99m Twmpau – Welsh hills at or above 30m and below 100m in height that have 30m minimum drop, with an accompanying sub list entitled the 30-99m Sub-Twmpau, with the criteria for this sub category being all Welsh hills at or above 30m and below 100m in height with 20m or more and below 30m of drop.  The list is authored by Myrddyn Phillips, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.

30-99m Twmpau by Myrddyn Phillips

Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose prominence equal or exceed half that of their absolute height.  With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose prominence is between one third and half that of their absolute height.  The list is authored by Myrddyn Phillips with the Introduction to the start of the Mapping Mountains publication of this list appearing on the 3rd December 2015, and the list is now available in its entirety on Mapping Mountains in Google Doc format.  

Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips

The name the hill is now listed by is Emsger, and it is adjoined to the Garn Fawr group of hills, which are situated in the south-western part of South Wales (Region B, Sub-Region B1), and it is positioned on an island with a minor road over 7.00km to its east, and has the small city of Tyddewi (St David's) towards the east.

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was included in the main P30 list with a summit height of 37m, based on the spot height that appears on the Ordnance Survey 1:25,000 Explorer map.

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

However, it was not until the survey with the Trimble GeoXH 6000 that the details for this hill could be accurately re-assessed.  With the caveat that the island is predominantly rock and if not for a series of steps leading up toward its summit its ascent would no doubt prove more problematic.  The upper part of Emsger has a lighthouse on it; this was built in 1839, and was converted to operating by electric in 1959, and demanned and automated in 1983.  Adjacent to the lighthouse are buildings and platforms, and therefore what once constituted the natural summit of the island is either buried under the lighthouse/platforms or it was destroyed during construction of the lighthouse.

The Trimble GeoXH 6000 gathering data 0.99m above the highest remaining natural ground at the summit of Emsger, otherwise known as South Bishop (SM 651 226) which resulted in this island's significant height revision

The summit height produced by the Trimble GeoXH 6000 survey is 33.8m and is positioned at SM 65116 22619, and this comes within the parameters of the Significant Height Revisions used within this page heading, these parameters are:

The term Significant Height Revisions applies to any listed hill whose interpolated height and Ordnance Survey, Harvey or other interactive map summit spot height has a 2m or more discrepancy when compared to the survey result produced by the Trimble GeoXH 6000 or analysis of data produced via LIDAR.  Also included are hills whose summit map data is missing an uppermost ring contour when compared with the data produced by the Trimble or by LIDAR analysis.

Therefore, the new listed summit height of this hill is 33.8m and this was derived from a Trimble GeoXH 6000 survey, this is 3.2m lower than the previously listed summit height which was based on the spot height that appears on the Ordnance Survey 1:25,000 Explorer map.


The full details for the hill are:

Group:  Garn Fawr

Name:  Emsger

OS 1:50,000 map:  157

Summit Height (New Height):  33.8m (converted to OSGM15)

Summit Grid Reference:  SM 65116 22619

Bwlch Height:  N/A (island)

Bwlch Grid Reference:  N/A (island)

Drop:  33.8m

Dominance:  100.00%

Remoteness:  7.725km


Myrddyn Phillips and Aled Williams (June 2016)






Wednesday, 1 June 2016

Mapping Mountains – Trimble Surveys – Garn Fawr


14.05.16  The Smalls (SM 466 088), Emsger (SM 651 226) and Daufraich (SM 661 236)

Emsger, also known as South Bishop (SM 651 226)

The coast around Pembrokeshire has a reputation for beautiful scenery comprising secluded coves, cliffs, sea stacks and islands.  The islands are many, with Ynys Dewi (Ramsey), Skomer and Skokholm being three of the largest in area.  However, dotted around these three islands are a myriad of smaller ones, many are rocky, some have lighthouses situated on them and all are of interest. 

Over the last couple of years Adrian Rayner has organised a number of ‘island adventures,’ usually these are to islands that are not on the tourist trail where daily boats are scheduled to visit and drop people off for a set number of hours before picking them up and whisking them back to the mainland.  The islands Adrian concentrates on are those that are seldom visited and which require a skilled crew to get to, and drop off, and pick up any budding ascensionist.  These island adventures require diplomatic and logistical skills to organise and thanks should be expressed to Adrian for arranging them, as all I have been a part of have been great fun, packed with interest and variety.  Today’s little adventure comprised a visit to The Smalls, Emsger (South Bishop) and Daufraich, with the first two of these islands having lighthouses situated on them.

We met at St Justinian’s which is situated to the west of St David’s and is the departure point for the RNLI Lifeboat, as well as the departure point for Ynys Dewi (Ramsey).  During the previous night a northerly weather front had descended south and left a slight northern breeze which meant that landing on each island was under debate by the crew of our RIB.  The original departure was arranged for 8.00am, and it was nearing 9.30am when the proverbial thumb was lifted in to the air signifying that the adventure was on.

Our RIB for the day

Ayako heading down to board the RIB

As we skimmed across the water toward the southern part of Ynys Dewi the sky was grey and the sea relatively becalmed.  Our first landing destination was The Smalls which as their name implies are a small group of islets, wave battered and remote, and an approximate 12 miles from the western coast of Pembrokeshire.  This small group of islets are the furthest west of any land in Wales, few people visit and even fewer people land.  On our way we approached the landing steps on Emsger and the skipper judged that landing was feasible after visiting The Smalls as the incoming tide would enable us to land higher on the carved out steps that give access to the upper part of the island.

The landing steps on the northern side of Emsger

Leaving Emsger for later that morning we skimmed off west in to a literal sea of seemingly nothingness, the only rock visible was Gwales (Grassholm) and its adjoined West Tump to our south, these are the remotest P15 summits that Wales has to offer and are perched seven miles west of Skomer, they looked weather beaten and almost forgotten except for their colony of Gannets.  As the RIB made progress a small stick stuck out of the sea, just visible it shimmered its presence and as the RIB continued west the stick grew forever larger and slowly took on the shape of a lighthouse, still and grey it stood forlorn, a last vestige of man’s presence before Ireland is reached.


Gwales, also known as Grassholm (SM 598 093)


The Smalls (SM 466 088) - the furthest westerly point of Wales

The Smalls lighthouse has a fascinating history as an incident here in 1800 when one man died and the other lived in sight of his corpse for the following three months before rescue, initiated future three keeper manning.

As the RIB pulled up and lodged its front end against the steps leading on to the slime of copious amounts of seal poo, we clambered off one after another for our all too brief stay on this small but unique part of Wales. 

Approaching The Smalls.  Seated are (L-R) Rob, Sarah, Bob and Jon

The highest natural piece of rock still visible was agreed upon by a number of people and soon the Trimble was positioned on it gathering its customary five minutes of data.  During this time most people roamed the islet finding evidence of the old wooden piles still embedded in the rock that had formed a part of the older lighthouse.

Sheila looking out to sea

Gathering data at the summit of The Smalls, with (L-R) Jon, Bob, Sarah and Rob in the background

Standing on The Smalls felt rather empty, somewhat of a void, our stay was only brief and because of this we all pottered round investigating what the islet had and doing so as quickly as possible, when this happens time is taken up as is concentration, but even compensating for this the islet is still a forgotten place, an end of something rather than a beginning, a flatbed of wave battered emptiness that must be hell on earth during storms, the thought of manning the old lighthouse that supposedly shuddered during storms fills me with dread.

Wave battered and forlorn, the last vestige of land before Ireland

Sheila joining Adrian on the RIB with Sarah and Bob waiting their turn.  These steps were covered in seal poo and extremely slippy

Once back on the RIB we headed toward Emsger, which has at least two rows of carved steps signifying a landing place, we approached the ones on the island’s north.  On the way I spotted the first Puffins that to my knowledge I’ve ever seen, I was struck with how cute and small they are, almost like a sea budgie with little wings flapping ten to the dozen and with tiny little bodies.

(L-R) Daufraich, Emsger (South Bishop), Carn Llidi (mainland Pembrokeshire) and Carn Ysgubor on Ynys Dewi (Ramsey)

As we approached Emsger (South Bishop) the cloud had broken revealing patches of blue sky which according to the sea mariners aboard the RIB would herald choppier sea conditions.  Again the RIB was manoeuvred in to place with its front end lodged relatively firmly against the rock next to the landing steps and one by one we clambered on to the rock.  This island forms a part of the chain known as the Bishops and Clerks which stretch northward and take in Daufraich, Carreg Rhoson and North Bishop, with the latter two aligned south-west to north-east as rocky lumps of ribbed islets.

The south-eastern side of Emsger


Daufraich (SM 661 236)


Carreg Rhoson (SM 667 254)


(L-R) North Bishop, Carreg Rhoson and Daufraich


Emsger (SM 651 226)

The carved rock steps led steeply up toward the island’s lighthouse which was constructed in 1839, with it being automated and demanned in 1983.  The whole upper part of the island is now a part of the lighthouse and its surrounding ground, any vestige of natural earth or rock was on the periphery of this, with the natural high point of the island long since gone with it either buried under the construction or levelled due to the impending construction of the lighthouse.  Consensus of opinion gave the remaining high point as a scrub bit of earth adjacent to a corner at the base of one of the walls, this at least was convenient for Trimble placement and within a few minutes it was gathering data perched on the wall 0.99m above the patch of earth.

Bob getting on to dryish land on Emsger


Bob and Sarah heading up the steps


Rob and Adrian on the final steps to the lighthouse


Gathering data 0.99m above the highest remaining natural ground that was found

After the Trimble was closed down and packed away I walked down to the helipad which was constructed in 1971.  This gave views back up toward the lighthouse and across the carved westerly steps toward the remainder of the Bishops and Clerks.  By now our stay on Emsger was nearing its end and as I clambered back up the steps and round the lighthouse to the steps on the island’s northerly section people were making their way down to the RIB which had been circling the island during our stay.  Emsger is a great lump of rock which if not for the steps up to its lighthouse would prove a difficult place to get to the top of; it stands squat in the sea as an up thrust of rock with its beacon now signalling its position.

Adrian on the helipad with our RIB circling the island


Looking toward the lighthouse from the helipad


Beyond the westerly steps with North Bishop, Carreg Rhoson and Daufraich in the background


The RIB approaching to pick us up from Emsger

Once we were all safely in the RIB we headed toward Daufraich and approached it from its north.  The main island of Daufraich consists of two parts, with the most easterly given a 20m spot height on Ordnance Survey maps, this looked relatively easy to get to the top of once landed, however the higher 21m map heighted part of the island is its westerly section and this looked decidedly harder to get to the top of, although it did look doable.  As the RIB approached we still didn’t know if the skipper would take us in to attempt a landing, and as we neared the rock it suddenly came apparent that the go ahead had been given and Jon, Rob, Adrian and Bob all made a move toward the front of the RIB, with Ayako, Sheila and Sarah all wisely staying put, not wanting to be put off by a bit of wave battered steep and scrambly rock which for one slip would mean a decidedly wet and somewhat dangerous immersion in the Irish sea, I followed.

Approaching Daufraich


Our route went up somewhere just left of centre

Thankfully the rock proved relatively dry and was not slippy, this gave us all good purchase and although the going was steep there were adequate hand and foot holds to be found.  My confidence on rock is not as it once was, partly because I rarely have necessity to scramble on it these days, and therefore when confronted with 20m of scrambly rock perched above bottomless depths my mind and body goes AAARRRGGGHHHHHHH.  However, all was fine, fine, fine and I followed the others up to the summit.

Somewhere below was the route we'd just come up

The westerly part of Daufraich has two summits, both given the same 21m spot height on Ordnance Survey maps and ideally both needed surveying but time dictated that only one could, and all present agreed that the higher summit was the one that we were standing on, and as the others went over to visit the other 21m map heighted top I positioned the Trimble on what looked to be the true summit and it beeped away perched on its rock as gulls circled overhead and the RIB slowly manoeuvred back toward our landing spot. 

Gathering data at the summit of Daufraich


Carreg Rhoson (SM 667 254)


The Trimble set-up position at the summit of Daufraich

As the Trimble gathered its data I walked over to the other summit and joined Jon, Rob, Adrian and Bob as they assessed which was higher, it was a close call, but the one where the Trimble was positioned received our vote for being the higher. 


Jon checking his hand-held GPS near the summit of Daufraich

Heading toward the second 21m map heighted summit that consensus of opinion gave as slightly lower


Jon at the summit of Daufraich

It was now time to go and I walked back to the Trimble to close it off, take a few photos of its set-up position and set off down the rock to join the others on our downward route.  Rob and Bob partly guided me down and I’m thankful that they did, and after a few minutes of nerve jangling perched over the watery depths we were safely seated in the RIB and the skipper span it round and headed toward the southerly coast of Ynys Dewi (Ramsey).

Jon, Adrian and Bob at the start of the scramble down


Safely back on the RIB and leaving Daufraich

The southerly coastline of this island proved wonderful to see with steep and rock chopped islands butting out of the sea, set against the crumbled cliff line of Ynys Dewi.  The RIB was taken between many of these smaller islands and underneath their sheer cliffs, many plunging directly down from small grassed summits above.  It proved a wondrous place to see as we slowly meandered past the sculptured islands and through a cave where sunlight glimmered across the rock and sea.

The eastern cliffs of Carn Llundain


Rounding the southern part of Ynys Dewi (Ramsey)


Heading through the cave


Being watched

All that remained was a speedy whizz across the sea past The Bitches rocks toward our departure point at St Justinian’s.  It had been another fantastic experience visiting places that few people ever get the opportunity to see let alone stand on, and thanks to Adrian for organising the trip and to Venture Jet for their professionalism and taking us to some of Wales’ more remote islands.
   


Survey Result:


The Smalls

The summit data for The Smalls did not process, the first data set that has not done so with the Trimble, with the following remark appearing whilst processing:  A position has been detected that is not compatible with the current coordinates.  Perhaps an Irish base station was picked up during data logging or perhaps The Smalls are just so far out in the Irish Sea that coordinates do not exist for processing data!




Summit Height:  33.8m (converted to OSGM15) (significant height revision)

Summit Grid Reference:  SM 65116 22619

Bwlch Height:  N/A (island)

Bwlch Grid Reference:  N/A (island)

Drop:  33.8m

Dominance:  100.00%




Daufraich

Summit Height:  21.7m (converted to OSGM15)
 
Summit Grid Reference:  SM 66199 23673 (summit relocation)

Bwlch Height:  N/A (island)

Bwlch Grid Reference:  N/A (island)

 
Dominance:  100.00%