Change Register – Y Pedwarau - The 400m Hills of Wales

Change Register

Y Pedwarau – The 400m Hills of Wales

Y Pedwarau are the Welsh hills at or above 400m and below 500m in height that have a minimum drop of 30m.  The list’s initial compilation was completed in November 2002 and entitled The 400m Peaks of Wales and was first published on 19^th December 2002 on the RHB Yahoo Group file database along with the equivalent English and Manx hills, with the file entitled the 400m hills of England, Isle of Man and Wales, this file was uploaded by Rob Woodall who later augmented data from Clem Clements into the database.

When the listing of The 400m Peaks of Wales was published on the RHB Yahoo Group file database it was during a time when the limits of listing P30 hills was being pushed ever downward beyond the 500m barrier, there were two main instigators behind this burst of listing activity; Clem Clements concentrating on 300m – 500m Scottish, English and Welsh hills and Myrddyn Phillips concentrating on 30m – 500m Welsh hills and 400m – 500m English hills.

The listing was re-evaluated and later published on 22^nd October 2004 on Geoff Crowder’s v-g.me website and entitled The Welsh 400 Metre Peaks, coinciding with Geoff’s publication the list was also published by Mike Grant on his 5everdene website.      

The master hand written list was maintained by Myrddyn Phillips with occasional updates appearing on the v-g.me website, with the original publication on the RHB Yahoo Group file database later being duplicated en masse by Mark Jackson without prior consultation with, or even notification to the author, with these data forming the equivalent part of the Tumps and with this act resulting in years of undue data divergence that is ongoing.

It wasn’t until the interest shown by Mark Trengove for this list to be published by Europeaklist that it was next fully re-evaluated, with the subsequent publication on 23^rd May 2013 entitled Y Pedwarau and leading the way to the list becoming co-authored with Aled Williams.  The listing of Y Pedwarau was later published on 6^th January 2014 by Phil Newby on his Haroldstreet website, and all future updates to the list have been catalogued on the Mapping Mountains site.

With all updates to the list appearing on Mapping Mountains it became evident that keeping the list up-to-date if hosted on another person’s website was difficult to say the least, therefore on 30^th January 2017 the Y Pedwarau list commenced publication on Mapping Mountains with five sub lists accompanying the main P30 Pedwar list.   

Although the criteria has remained the same the list has changed greatly since its first publication with the advent of independent surveyors and the use of LIDAR data enabling greater accuracy for numerical data, and the meticulous research conducted by Aled Williams enhancing the place-name data.  The listing is also gaining in popularity as there are now four known completers of Y Pedwarau with another ten people having completed 100 or more Pedwar hills.

It seems fitting that the list of Y Pedwarau – The 400m Hills of Wales should now benefit from a detailed Change Register, and although the great bulk of updates to this list have been catalogued since its first inception in 2002, it is prudent for this Change Register to initially detail the changes to the list since the 2013 publication by Europeaklist.

The Change Register to Y Pedwarau – The 400m Hills of Wales appears below with the reclassifications to the main P30 list being detailed chronologically in receding order.

Change Register

Y Pedwarau – The 400m Hills of Wales

Esgair Wen    494.8m at SN 80767 66474 

LIDAR image of Esgair Wen (SN 807 664)

The reclassification of this hill from 400m Sub-Pedwar to Pedwar status was announced via this Change Register with a retrospective Hill Reclassifications post published on Mapping Mountains on the 02.09.23.  When the 1^st edition of the Y Pedwarau was published by Europeaklist in May 2013 this hill was listed as a Pedwar with 31m of drop, based on the 496m summit spot height that appears on the contemporary Ordnance Survey 1:25,000 Explorer map and the 465m bwlch spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map.  It was subsequently reclassified to 400m Sub-Pedwar status due to analysis of what is now the archived Welsh LIDAR, resulting in a 494.6m summit height and a 464.7m bwlch height, with these values giving this hill 29.9m of drop.  Its reinstatement to Pedwar status is due to analysis of new Welsh LIDAR, resulting in a 494.8m summit height and a 464.8m bwlch height, with these values giving this hill 30.0m of drop.  Pedwar total increases by one and confirmed as 448.

 

Moel Wnog    471.3m at SH 73522 44084 

LIDAR image of Moel Wnog (SH 735 440)

The reclassification of this hill from Pedwar to 400m Sub-Pedwar status was announced via this Change Register with a retrospective Hill Reclassifications post published on Mapping Mountains on the 11.08.23.  The hill was listed as a Pedwar with an estimated c 34m of drop, based on the 473m summit spot height that appears on the Harvey 1:40,000 British Mountain Map and an estimated c 439m bwlch height, based on interpolation of 10m contouring between 430m – 440m that appear on the Ordnance Survey 1:25,000 Explorer map.  Its reclassification is due to detail produced by Joe Nuttall in his surface analysis progamme, with subsequent LIDAR analysis conducted by the DoBIH team and independently by Aled Williams and Myrddyn Phillips, resulting in a 471.3m summit height and a 441.5m bwlch height, with these values giving this hill 29.8m of drop.  Pedwar total decreases by one and confirmed as 447.

Crin Fynydd    467.3m at SO 17846 60534 & SO 17846 60536 & SO 17853 60534  

LIDAR image of Crin Fynydd (SO 178 605)

The reclassification of this hill from Pedwar to 400m Sub-Pedwar status was announced via this Change Register with a retrospective Hill Reclassifications post published on Mapping Mountains on the 05.08.23.  The hill was listed as a Pedwar with 30m of drop, based on the 468m summit spot height and the 438m bwlch spot height that appear on the Ordnance Survey 1:25,000 Explorer map.  Its reclassification is due to detail produced by Joe Nuttall in his surface analysis progamme, with subsequent LIDAR analysis conducted by the DoBIH team and independently by Aled Williams and Myrddyn Phillips, resulting in a 467.3m summit height and a 438.3m bwlch height, with these values giving this hill 29.0m of drop.  Pedwar total decreases by one and confirmed as 448.

Mynydd Fforest    399.8m at SO 09495 39530 

LIDAR summit image of Mynydd Fforest (SO 094 395)

The reclassification of this hill from Pedwar to 390m Sub-Pedwar status was announced via this Change Register with a retrospective Hill Reclassifications post published on Mapping Mountains on the 30.07.23.  The hill was listed as a Pedwar with an estimated c 63m of drop, based on the 400m summit spot height adjoined to the triangulation pillar that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and an estimated c 337m bwlch height, based on interpolation of 10m contouring between 330m – 340m.  Its reclassification is due to detail produced by Joe Nuttall in his surface analysis progamme, with subsequent LIDAR analysis conducted by the DoBIH team and independently by Aled Williams and Myrddyn Phillips, resulting in a 399.8m summit height and a 334.9m bwlch height, with these values giving this hill 65.0m of drop.  Pedwar total decreases by one and confirmed as 449.

Cefn Gwenffrwd    422.7m at SN 74078 48615

LIDAR image of Cefn Gwenffrwd (SN 740 486)

The reclassification of this hill from 400m Sub-Pedwar to Pedwar status was announced via this Change Register with a retrospective Hill Reclassifications post published on Mapping Mountains on the 10.07.23.  The hill was listed as a 400m Sub-Pedwar with 29m of drop, based on the 422m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and the 393m bwlch spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map.  Its reclassification is due to detail produced by Joe Nuttall in his surface analysis progamme, with subsequent LIDAR analysis conducted by the DoBIH team and independently by Aled Williams and Myrddyn Phillips, resulting in a 422.7m summit height and a 392.4m bwlch height, with these values giving this hill 30.3m of drop.  Pedwar total increases by one and confirmed as 450.

 

Hergest Ridge    401.0m at SO 24693 55769 

Hergest Ridge (SO 246 557)

The addition of this hill to Pedwar status is under the classification of National Top and its Hill Reclassifications post was published on Mapping Mountains on the 26.10.21.  The hill was analysed via LIDAR and a subsequent Trimble GeoXH 6000 summit survey conducted by Myrddyn Phillips and Aled Williams on the 17.07.21 confirmed it as being over 400m in height, resulting in a 401.0m summit height and a 269.4m bwlch height, with these values giving this hill 131.7m of drop.  Pedwar total increases by one and confirmed as 449.

Allt y Moch    419.7m at SO 02202 84938 

Allt y Moch (SO 022 849)

The reclassification of this hill from 400m Sub-Pedwar to Pedwar status was announced in a Hill Reclassifications post published on Mapping Mountains on the 31.10.20.  The reclassification is due to a Trimble GeoXH 6000 survey conducted by Myrddyn Phillips and Aled Williams over two days; 11.07.20 and 18.10.20 and was prompted by Ronnie Bowron’s evaluation of the summit analysis programme produced by Joe Nuttall.  The survey resulted in a 419.7m summit height and a 389.6m bwlch height, with these values giving this hill 30.1m of drop.  Pedwar total increases by one and confirmed as 448.

Lan Fawr    427.4m at SN 69244 50156

Lan Fawr (SN 692 501)

The details of the reclassification of this hill back to 400m Sub-Pedwar status appeared in a Hill Reclassification post published on Mapping Mountains on the 20.05.20 and is due to a Trimble GeoXH 6000 survey conducted on the 05.01.20 by Myrddyn Phillips, with assistance from Rob Woodall, resulting in a 427.4m summit height and a 398.3m bwlch height, with these values giving this hill 29.1m of drop.  Pedwar total decreases by one and confirmed as 447.

29^th December 2019 – Haroldstreet publishes Y Pedwarau – The 400m Hills of Wales. 

Pedwar total confirmed as 448.





Pt. 413m    413m at SO 10581 01800

The reclassification of this hill from 400m Sub-Pedwar to Pedwar status appeared in a Hill Reclassification post published on Mapping Mountains on the 10.05.20 and is dependent upon re-assessment of detail on contemporary Ordnance Survey maps, including detail on the OS Maps website, resulting in a 413m summit height that appears as a spot height on Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps and an estimated bwlch height of c 382m based on interpolation of 5m contouring that appears on the OS Maps website, with these values giving this hill an estimated c 31m of drop.  Pedwar total increases by one and confirmed as 448.

Lan Fawr    429m at SN 69253 50157

Lan Fawr (SN 692 501)

The reclassification of this hill from 400m Sub-Pedwar to Pedwar status appeared in a Hill Reclassification post published on Mapping Mountains on the 04.03.20 and is dependent upon re-assessment of detail on contemporary Ordnance Survey maps, including detail on the OS Maps website, resulting in a 429m summit height that appears as a spot height on Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps and an estimated bwlch height of c 399m based on interpolation of 5m contouring that appears on the OS Maps website, with these values giving this hill an estimated c 30m of drop.  Pedwar total increases by one and confirmed as 447.

Pt. 427m    427m at SN 73157 49745

This hill’s reclassification from Pedwar to 400m Sub-Pedwar status appeared in a Hill Reclassification post published on Mapping Mountains on the 10.02.20 and is dependent upon re-assessment of detail on contemporary Ordnance Survey maps, including detail on the OS Maps website and the WalkLakes website, resulting in a 427m summit height that appears as a spot height on Ordnance Survey 1:25,000 Explorer maps and an estimated bwlch height of c 398m based on interpolation of 5m contouring that appear on the OS Maps website, with these values giving this hill an estimated c 29m of drop.  Pedwar total decreases by one and confirmed as 446.

Y Gribin    485m at SH 90626 17580

The reclassification of this hill from 400m Sub-Pedwar to Pedwar status was announced on Mapping Mountains on the 28.10.19 and is dependent upon LIDAR analysis for its adjacent southerly hill, and examination of detail on the OS Maps website, the WalkLakes website and online logs on the Hill Bagging website.  Resulting in a 485m summit height that appears as a spot height on Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps and a 427m bwlch height that appears as a spot height on the Ordnance Survey 1:25,000 Explorer map, with these values giving this hill 58m of drop.  Pedwar total increases by one and confirmed as 447.

Y Gribin    484.8m at SH 90233 17288

LIDAR image of Y Gribin (SH 902 172)

The reclassification of this hill from Pedwar to 400m Sub-Pedwar status was announced on Mapping Mountains on the 24.10.19 and is dependent upon LIDAR analysis and examination of detail on the OS Maps website, the WalkLakes website and online logs on the Hill Bagging website.  Resulting in a 484.8m summit height from LIDAR analysis initially conducted by Aled Williams and subsequently by Myrddyn Phillips and an estimated bwlch height of c 462m from interpolation of 5m contouring on the OS Maps website, with these values giving this hill c 23m of drop.  Pedwar total decreases by one and confirmed as 446.

Fynach Fawr    462.5m at SN 72685 89095

Fynach Fawr (SN 726 890) now reinstated as a Pedwar

This hill’s reinstatement as a Pedwar was confirmed by a Trimble GeoXH 6000 survey which took place on the 03.06.18 with the Survey Post appearing on Mapping Mountains on the 21.08.18 and the Hill Reclassifications post appearing on the 20.09.18, the hill was previously listed as a 400m Sub-Pedwar due to LIDAR analysis which had resulted in its reclassification from Pedwar status (see below).  This hill was subsequently surveyed by Myrddyn Phillips using a Trimble GeoXH 6000 resulting in a 30.3m drop value.  Pedwar total increases by one and confirmed as 447.

Fuches    449.3m at SN 86623 83656

Fuches (SN 866 836) now reinstated as a Pedwar

The survey confirming this hill’s reinstatement as a Pedwar took place on the 03.06.18 with the Survey Post appearing on Mapping Mountains on the 16.08.18 and the Hill Reclassifications post appearing on the 12.09.18, the hill was previously listed as a 400m Sub-Pedwar due to LIDAR analysis which had resulted in its reclassification from Pedwar status (see below).  This hill was subsequently surveyed by Myrddyn Phillips using a Trimble GeoXH 6000 resulting in a 30.2m drop value.  Pedwar total increases by one and confirmed as 446.

Garth Fawr    410m (artificial) at SO 082 059

The new artificial Pedwar of Garth Fawr (SO 082 059).  Photo:  Rob Woodall

This is an artificial hill and its inclusion as a Pedwar was announced on Mapping Mountains on the 08.12.17.  Its inclusion in the Y Pedwarau is due to 5m contour intervals on the OS Maps site (the recent replacement for OS Get-a-map) coupled with bwlch LIDAR analysis conducted by Aled Williams and an inspection, albeit from a distance, of this hill conducted independently by Rob Woodall and Myrddyn Phillips.  OS Maps give the hill three uppermost 410m contours and bwlch contouring between 375m – 380m, whilst LIDAR analysis gives a 388.0m summit and a 374.8m bwlch height, with it being evident that the mine spoil was deposited after data produced by LIDAR was taken.  The combination of the contours on OS Maps, LIDAR bwlch data and the 410m spot height that appears on the summit area of this hill on the interactive map hosted on the WalkLakes website and which is produced from Ordnance Survey Open Data is sufficient for the hill to be given c 35m of drop, which when combined with the height of this hill and it being considered solid and stable is sufficient for it to be classified as a Pedwar.  Pedwar total increases by one and confirmed as 445.

Twyn y Waun    460.5m (artificial) at SO 08549 06591

The new artificial Pedwar of Twyn y Waun (SO 08549 06591)

The addition of this artificial hill to Pedwar status was announced on Mapping Mountains on the 08.12.17.  Its inclusion as a Pedwar is due to a survey with the Trimble GeoXH 6000 conducted by Myrddyn Phillips on the 01.12.17, with this being instigated by a recent on-site visit by Rob Woodall and a document entitled ‘Artificial Pedwar Hills’ written by Aled Williams in 2015.  The survey resulted in a 460.5m summit height and a 419.5m bwlch height, with these values giving this hill 41.0m of drop, which when combined with the height of the hill and it being considered solid and stable is sufficient for its inclusion in the Y Pedwarau.  Pedwar total increases by one and confirmed as 444.

Twyn y Waun    476.0m (artificial) at SO 08209 07041 / 450.6m (natural) at SO 08442 07378

The 476.0m artificial Dual Summit of Twyn y Waun

The 450.6m natural Dual Summit of Twyn y Waun with the artificial Dual Summit in the background

The Reclassification of this hill to Dual Summit status was announced on Mapping Mountains on the 08.12.17, with the concept of a Dual Summit being a hill whose natural high point is intact but it has as adjacent artificial high point which is a relatively recent construction and is considered solid and stable and which is higher.  The natural high point of Twyn y Waun was surveyed with the Trimble GeoXH 6000 on the 06.06.23 as 450.6m and its adjacent higher artificial Dual Summit was surveyed using the Trimble GeoXH 6000 on the 01.12.17 as 476.0m in height.  For those people visiting the Y Pedwarau an ascent of either the natural or the artificial Dual Summit is sufficient to claim an ascent of this hill.  Pedwar total remains the same and confirmed as 443.

Craig y Garreg Lwyd    473.8m at SH 73047 42746

Craig y Garreg Lwyd (SH 730 427) now re-instated as a Pedwar

The Hill Reclassification post confirming this hill’s re-instatement to Pedwar status was published on Mapping Mountains on the 04.10.17, the hill was previously listed as a 400m Sub-Pedwar due to a survey with the Trimble GeoXH 6000 which had resulted in its reclassification from Pedwar status (see below).  This hill was subsequently surveyed by John Barnard and Graham Jacking on the 24.06.17 with a Leica GS15 resulting in a 30.2m drop value.  Pedwar total increases by one and confirmed as 443.

Bwlch y Cefn Bank    399.9m at SO 12369 60880

Bwlch y Cefn Bank (SO 123 608) is now reclassified to a 390m Sub-Pedwar

This hill’s reclassification from Pedwar status was announced on Mapping Mountains on the 27.09.17.  The hill was previously listed with a 400m summit height based on the spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps, and with an estimated c 52m of drop these values were sufficient for the hill to be listed as a Pedwar.  The hill’s reclassification is due to the analysis of LIDAR data by Aled Williams resulting in a 399.0m summit height and a 347.1m bwlch height, and as the summit height is below the 400m height for Pedwar status this hill is reclassified to a 390m Sub-Pedwar, with a subsequent Trimble GeoXH 6000 survey confirming this hill's reclassification with a 399.9m (converted to OSGM15) summit at SO 12369 60880 and 347.2m (converted to OSGM15) bwlch at SO 12752 60893, giving this hill a summit height below 400m.  Pedwar total decreases by one and confirmed as 442.

Waun Sidan    407.7m at SO 25021 72649

Waun Sidan (SO 250 726) is now classified as a Pedwar

The reclassification of this hill from 400m Sub-Pedwar to Pedwar status was announced on the Mapping Mountains site on the 19.09.17, the hill was previously listed with 29m of drop based on a basic levelling survey conducted by Myrddyn Phillips on the 05.10.03.  This hill’s reclassification is due to LIDAR data analysed by Aled Williams resulting in a 407.7m summit height and a 376.3m bwlch height, with these values giving this hill 31.4m of drop which is sufficient for this hill to be listed as a Pedwar.  Pedwar total increases by one and confirmed as 443.

Fuches    446.7m at SN 86610 83643

Fuches (SN 866 836)

This hill’s reclassification from Pedwar to 400m Sub-Pedwar was announced on the Mapping Mountains site on the 11.06.17, the hill was previously listed with c 76m of drop based on an estimated summit height of c 453m and an estimated bwlch height of c 377m with the latter based on interpolation of bwlch contouring between 370m – 380m.  This hill’s reclassification is due to LIDAR data analysed by Aled Williams and is also dependent upon the details for its adjacent hill of Allt y Derw (SN 873 834), with the height of the highest hill swapping, with this affecting the position of the critical bwlch of both hills and the status of Fuches, resulting in a 446.7m summit height and a 419.2m bwlch height, with these values giving this hill 27.5m of drop which is insufficient for its retention as a Pedwar.  This hill has subsequently been reinstated as a Pedwar (see above).  Pedwar total decreases by one and confirmed as 442.

Bryn Crugog    446.7m at SN 94130 92357

The reclassification of this hill to Pedwar status was announced on Mapping Mountains on 06.06.17, the hill was previously listed as a 400m Sub-Pedwar with c 20m of drop based on the 447m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and an estimated c 427m bwlch height based on interpolation of bwlch contouring between 420m – 430m.  This hill’s reclassification is due to LIDAR data analysed by Aled Williams (and is also dependent upon the details for its adjacent hill of Esgair Hir [SN 937 925], see below) resulting in a 446.7m summit height and a 394.7m bwlch height, with these values giving this hill 52.0m of drop.  Pedwar total increases by one and confirmed as 443.

Esgair Hir    446.5m at SN 93723 92558

The announcement of this hill’s reclassification to 400m Sub-Pedwar status was made on Mapping Mountains on the 05.06.17, the hill was previously listed as a Pedwar with c 51m of drop based on the 448m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 397m bwlch height based on interpolation of bwlch contouring between 390m – 400m.  This hill’s reclassification is due to LIDAR data analysed by Aled Williams (and is also dependent upon the details for its adjacent hill of Bryn Crugog [SN 941 923], see above) resulting in a 446.5m summit height and a 423.7m bwlch height, with these values giving this hill 22.8m of drop which is insufficient for Pedwar qualification.  Pedwar total decreases by one and confirmed as 442.

Fainc Fawr    466.2m at SN 74150 89367

This reclassification from Pedwar to 400m Sub-Pedwar was announced on Mapping Mountains on 14.05.17, the hill was previously listed as a Pedwar with 32m of drop based on a basic levelling survey conducted by Myrddyn Phillips on 17.04.03 which resulted in 104ft (31.7m) of drop.  This hill’s reclassification is due to LIDAR data analysed by Aled Williams resulting in a 466.2m summit height and a 437.9m bwlch height, with these values giving this hill 28.3m of drop which is insufficient for Pedwar qualification.  Pedwar total decreases by one and confirmed as 443.

Fynach Fawr    461.4m at SN 72715 89052

Fynach Fawr (SN 727 890)

The announcement of this hill’s reclassification was made on Mapping Mountains on the 12.05.17, the hill was previously listed as a Pedwar with c 32m of drop based on the 464m summit spot height on the Ordnance Survey 1:25,000 Explorer map and an estimated bwlch height of c 432m.  This hill’s reclassification to 400m Sub-Pedwar status is due to LIDAR data analysed by Aled Williams resulting in a 461.4m summit height and a 432.5m bwlch height, with these values giving this hill 28.9m of drop which is insufficient for Pedwar qualification.  This hill has subsequently been reinstated as a Pedwar (see above).  Pedwar total decreases by one and confirmed as 444.

Cwm Cynydd Bank    451.4m at SO 05342 72437

Cwm Cynydd Bank (SO 053 724) now reclassified to Pedwar status

This hill’s reclassification to Pedwar status was announced on Mapping Mountains on the 24.03.17, the hill was previously listed as a 400m Sub-Pedwar with c 27m of drop based on the 444m spot height on the Ordnance Survey 1:25,000 Explorer map and an estimated bwlch height of c 417m.  This hill’s reclassification to Pedwar status is due to LIDAR data analysed by Aled Williams resulting in a summit height of 451.4m and a bwlch height of 416.4m, with these values giving this hill 35.0m of drop.  Pedwar total increases by one and confirmed as 445.

Carreg y Gwynt    426.7m at SN 95698 77665

The announcement of this hill’s reclassification from Pedwar status was announced on the Mapping Mountains site on 17.03.17, the hill was previously listed as a Pedwar with 32m of drop based on a 104ft (31.7m) basic levelling survey conducted by Myrddyn Phillips on the 23.04.04.  This hill’s reclassification to 400m Sub-Pedwar status is due to LIDAR data analysed by Aled Williams resulting in a summit height of 426.7m and a bwlch height of 398.6m, with these values giving this hill 28.1m of drop, which is insufficient for it to retain its classification as a Pedwar.  Pedwar total decreases by one and confirmed as 444.

Esgair Wen    494.6m at SN 80767 66481

THIS HILL HAS SUBSEQUENTLY BEEN REINSTATED TO PEDWAR STATUS

The reclassification of this hill from Pedwar to 400m Sub-Pedwar status was announced on Mapping Mountains on 11.03.17, the hill was previously listed as a Pedwar with 31m of drop based on the 496m summit spot that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and the 465m bwlch spot height that appears on the Ordnance Survey enlarged mapping hosted on the Geograph website.  This hill’s reclassification is due to LIDAR data analysed by Aled Williams with the resulting height details being 494.6m summit and 464.7m bwlch, giving this hill 29.9m of drop which is insufficient for it to be classified as a Pedwar.  Pedwar total decreases by one and confirmed as 445.

30^th January 2017 – Mapping Mountains commences publication of Y Pedwarau. 

Pedwar total confirmed as 446.





Lan    413.6m at SO 05243 39144

This hill’s addition as a Pedwar was announced on the Mapping Mountains site on 30.12.16, the hill was previously listed as a 400m Sub-Pedwar with c 29m of drop based on an estimated summit and bwlch height of c 407m and c 378m respectively.  The reclassification to Pedwar is from LIDAR data analysed by Aled Williams with the resulting height details being 413.6m summit and 377.0m bwlch, giving this hill 36.6m of drop.  Pedwar total increases by one and confirmed as 446.

Twyn Disgwylfa    428.1m at SS 99572 95976

Confirmation of the reclassification via the Mapping Mountains site on 20.12.16, the hill was previously listed as a Pedwar with 30m of drop based on a 429m summit and 399m bwlch spot height.  The reclassification to 400m Sub-Pedwar is from LIDAR data analysed by Aled Williams with the resulting details being 428.1m summit and 399.3m bwlch, giving this hill only 28.8m of drop.  Pedwar total decreases by one and confirmed as 445.

Pt. 415.6m    415.6m at SO 24354 01195

The first hill to change in status to a Pedwar due to analysis of LIDAR data, with confirmation of the change in status via the Mapping Mountains site on 18.12.16, the hill was previously listed as a 400m Sub-Pedwar with c 28m of drop based on a 416m summit spot height and interpolation of bwlch contours.  The reclassification to Pedwar is from LIDAR data analysed by Aled Williams with the resulting details being 415.6m summit and 384.2m bwlch, giving this hill 31.4m of drop which is sufficient for Pedwar qualification.  Pedwar total increases by one and confirmed as 446.

 

Pt. 407.7m    407.7m at SO 18077 69277

Pt. 407.7m reclassified to a Sub-Pedwar due to a survey with the Trimble GeoXH 6000

Confirmation of this hill’s status change via the Mapping Mountains site on 17.04.16, the hill was previously listed as a Pedwar with 30m of drop based on a basic levelling survey conducted by Myrddyn Phillips on 15.12.03 which resulted in 98ft 6″ (30.0m) of drop.  This hill was subsequently surveyed with the Trimble GeoXH 6000 by Myrddyn Phillips on 08.04.16, resulting in the hill having only 28.3m of drop.  Pedwar total decreases by one and confirmed as 445.

Craig y Garreg-lwyd    473.4m at SH 73044 42742

Craig y Garreg-lwyd proved a surprising reclassification

Confirmation of this hill’s reclassification was announced on the Mapping Mountains site on 20.03.16, the hill was previously listed as a Pedwar with 35m of drop based on a 478m summit and a 443m bwlch spot height appearing on the Ordnance Survey enlarged mapping on the Geograph website, which had been favoured for this hill’s drop value over a basic levelling survey conducted by Myrddyn Phillips on 06.01.04 which resulted in 99ft (30.2m) of drop.  This hill was subsequently surveyed with the Trimble GeoXH 6000 by Myrddyn Phillips on 14.03.16, resulting in the hill having only 29.9m of drop.  This hill has subsequently been surveyed by John Barnard and Graham Jackson on the 24.06.17 using a Leica GS15 resulting in a 30.2m drop value and its re-instatement as a Pedwar (see above).  Pedwar total decreases by one and confirmed as 446.

Drysgol    483.6m at SN 94630 74415

Drysgol survived for a number of years as a Pedwar but changed status due to a survey with the Trimble GeoXH 6000

This hill’s status change was confirmed on the Mapping Mountains site on 17.03.16, the hill was previously listed as a Pedwar with 31m of drop based on a basic levelling survey conducted by Myrddyn Phillips on 13.05.05 which resulted in 102ft (31.1m) of drop.  This hill was subsequently surveyed with the Trimble GeoXH 6000 by Myrddyn Phillips and Fergal Hingerty on 12.03.16, resulting in the hill having only 29.2m of drop, which is insufficient for it to retain its Pedwar status.  Pedwar total decreases by one and confirmed as 447.

Banc Bronderwgoed    404.2m at SN 87154 98796

Late evening light on Banc Bronderwgoed

Confirmation of this hill’s status change via the Mapping Mountains site on 06.10.15, the hill was previously listed as a Pedwar with 30m of drop based on a basic levelling survey conducted by Myrddyn Phillips on 16.10.03 which resulted in a drop value of 99ft (30.2m).  This hill was subsequently surveyed with the Trimble GeoXH 6000 by Myrddyn Phillips and Aled Williams on 08.09.15, resulting in the hill having only 27.7m of drop, which is insufficient for it to retain its Pedwar status.  Pedwar total decreases by one and confirmed as 448.

Bryn Serth    403.9m at SO 14794 10908

The Trimble GeoXH 6000 survey ascertained that this hill is not c 410m high and reclassified it to the ranks of Sub-Pedwar

This hill’s status change was confirmed via the Mapping Mountains site on 05.09.15, with the change in classification being a surprise as the hill was listed with c 34m of drop based on a c 410m summit and c 376m bwlch height, with the summit height being an estimation based on a small 410m ring contour which is erroneous as no such height exists on the summit of this hill.  This hill was surveyed with the Trimble GeoXH 6000 by Myrddyn Phillips and Mark Trengove on 12.08.15, resulting in the summit height being 403.9m and the bwlch being 378.6m, giving this hill only 25.4m of drop and therefore it is reclassified from a Pedwar to a 400m Sub-Pedwar.  Pedwar total decreases by one and confirmed as 449.

Wenallt    466.4m at SN 93366 57112

Wenallt proved a disappointment to lose from the Pedwar ranks

Confirmation of this hill’s status change was announced on the Mapping Mountains site on 23.05.15, the hill was previously listed as a Pedwar with 30m of drop based on the 468m summit spot height and the 438m bwlch spot height, with the latter appearing on the Ordnance Survey enlarged mapping on the Geograph website.  This hill was surveyed with the Trimble GeoXH 6000 by Myrddyn Phillips on 21.05.15, resulting in a 466.4m summit and 438.1m bwlch height, with these values giving this hill a drop of 28.3m.  Pedwar total decreases by one and confirmed as 450.

Pt. 422.3m    422.3m at SO 07382 82231

Pt. 422.3m is now classified as a Sub-Pedwar

The first hill to be reclassified from a Pedwar to a 400m Sub-Pedwar through surveying with the Trimble GeoXH 6000, with the hill’s status change being confirmed via the Mapping Mountains site on 19.05.15, the hill’s listing as a Pedwar was based on Ordnance Survey spot heights of 424m at the summit and 393m at the bwlch, giving this hill 31m of drop.  This hill was subsequently surveyed with the Trimble GeoXH 6000 by Myrddyn Phillips on 16.05.15, resulting in a 422.3m summit and 393.2m bwlch height, with these values giving this hill 29.0m of drop and therefore reclassifying it to 400m Sub-Pedwar status.  Pedwar total decreases by one and confirmed as 451.

Mynydd Poeth    419.3m at SH 95375 51301

Gathering data with the Trimble GeoXH 6000 at the summit of Mynydd Poeth

The reclassification of Mynydd Poeth was announced on the Mapping Mountains site on 26.12.14, the hill was previously listed as a 400m Sub-Pedwar with c 29m of drop based on the Ordnance Survey 417m summit spot height and an estimated bwlch height of c 388m.  This hill was surveyed with the Trimble GeoXH 6000 by Myrddyn Phillips and Mark Trengove on 24.12.14, resulting in a 419.3m summit and 387.6m bwlch height, with these values giving this hill 31.7m of drop which is sufficient for its reclassification to Pedwar status.  Pedwar total increases by one and confirmed as 452.

Pt. 499.5m    499.5m at SH 66565 31003

Pt. 499.5m proved a welcome addition to the main list of Y Pedwarau

This hill’s reclassification to Pedwar status was announced on the Mapping Mountains site on 27.09.14, it was previously listed as a 400m Sub-Pedwar with c 27m of drop based on the Ordnance Survey 499m summit spot height on the enlarged mapping on the Geograph website and an estimated bwlch height of c 472m.  This hill was surveyed with the Trimble GeoXH 6000 by Myrddyn Phillips, Mark Trengove and Dave Middleton on 21.09.14, resulting in a 499.5m summit and 469.2m bwlch height, with these values giving this hill 30.3m of drop, and it proves a welcome addition to the ranks of Pedwar hills.  Pedwar total increases by one and confirmed as 451.

Craig y Ganllwyd    430.9m at SH 70775 25853

Craig y Ganllwyd was reclassified to a Pedwar due to the survey with the Trimble GeoXH 6000

Confirmation of this hill’s inclusion into the Pedwar ranks was announced on the Mapping Mountains site on 07.05.14, it was previously listed as a 400m Sub-Pedwar in the Europeaklist publication with 26m of drop based on the 423m Harvey Maps summit spot height and the 397m bwlch spot height appearing on the Ordnance Survey enlarged mapping on the Geograph website.  This hill was surveyed with the Trimble GeoXH 6000 by Myrddyn Phillips on 03.05.14, resulting in a 430.9m summit and 397.6m bwlch height, with these values giving this hill 33.4m of drop.  Pedwar total increases by one and confirmed as 450.

Cefn Perfa    411.2m at SO 1738957973

The confirmation that Cefn Perfa had sufficient drop to enter the ranks of Pedwarau waited until the hill was line surveyed

The status change of this hill was confirmed via the Mapping Mountains site on 13.03.14, having been previously listed in the Europeaklist publication as a 400m Sub-Pedwar with 29m of drop based on a basic levelling survey conducted on the 23.09.03 by Myrddyn Phillips resulting in 97ft (29.6m) of drop.  This hill was subsequently surveyed with the Trimble GeoXH 6000 by Myrddyn Phillips on 11.01.14, resulting in the hill having 30.0m of drop, this was later confirmed with a survey conducted by John Barnard and Myrddyn Phillips on the 13.03.14 with the following results; 30.06m drop via line survey, 30.1m drop via survey with the Leica GS15 and 30.1m drop via survey with the Trimble GeoXH 6000.  Pedwar total increases by one and confirmed as 449.

Y Garn    474.2m at SH 75874 37543

Y Garn was the first hill to be reclassified to a Pedwar after the Europeaklist Y Pedwarau booklet was published

The first hill to be reclassified to a Pedwar through surveying with the Trimble GeoXH 6000, with the change in status being announced on the Mapping Mountains site on 02.03.14, the hill had been previously listed as a 400m Sub-Pedwar with 29m of drop based on the 474m summit spot height on Ordnance Survey 1:25,000 Explorer maps and a bwlch height of 445m, with the details for the latter deriving from a 1461ft levelled height on the old 1:2,500 map.  This hill was subsequently surveyed with the Trimble GeoXH 6000 by Myrddyn Phillips and Aled Williams on 01.03.14, resulting in the hill having 31.2m of drop, which is sufficient for qualification as a Pedwar.  Pedwar total increases by one and confirmed as 448.

6^th January 2014 – Haroldstreet publishes Y Pedwarau. 

Pedwar total confirmed as 447.

23^rd May 2013 – Europeaklist publishes Y Pedwarau. 

Pedwar total confirmed as 447.

Myrddyn Phillips and Aled Williams (January 2017)