P30 Hill Reclassification Spreadsheet
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© 2013 - 2016 Myrddyn Phillips. Non-commercial copying is permitted provided attribution is preserved. Re-use of the presented data in this or another format requires the permission of the blog author.
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Contains OS Data © Crown copyright and database rights 2016, licensed under the OGL (see at http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ ).
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P30 Hill Reclassification Spreadsheet
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DateName
1:50,000 Map
Grid ReferenceSurveyed Height Summit (m)Surveyed Height Bwlch (m)Surveyed Drop (m)Previously Listed DropNotes
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24/04/2018Black Hill98
SD 86566 66232
468.4440.228.2c 30Reclassified from Four to 400m Sub-Four due to LIDAR analysis conducted by Aled Williams.
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24/04/2018Green Hill87
NY 85365 53384
419.6389.630.0528Reclassified from 400m Sub-Four to Four due to LIDAR analysis conducted by Aled Williams.
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29/01/2018Bryn y Gwynt124SH 599 44958.22830.2c 29Reclassified from 30-99m Sub-Twmpau to 30-99m Twmpau due to LIDAR analysis conducted by Aled Williams.
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08/12/2017Garth Fawr160SO 085 059c 414c 376c 39N/AArtificial hill qualifying for Pedwar status due to LIDAR analysis conducted by Aled Willimas and contours on OS Maps with its position first reported by Rob Woodall.
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01/12/2017Twyn y Waun160SO 085 065460.5419.541N/AArtificial hill qualifying for Pedwar status due to a Trimble GeoXH 6000 survey.
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01/12/2017Twyn y Waun160SO 082 070476c 380c 96N/AAn artificial hill newly appointed Dual Summit status and surveyed by the Trimble GeoXH 6000.
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06/10/2017Carneddau147SO 076 543375344.730.3c 30Originally in Hills to Survey Sub-List, later promoted to P30 list when drop values added, promotion confirmed by Trimble GeoXH 6000 survey
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03/10/2017Bwlchau Bank148SO 117 587348.3316.631.6c 33Confirmation via Trimble GeoXH 6000 survey of reclassification from Sub-Trichant to Trichant.
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03/10/2017Mynydd yr Heol148SO 107 601386.8355.631.227Reclassified from Sub-Trichant to Trichant due to a Trimble GeoXH 6000 survey, with subsequent confirmation via LIDAR analysis conducted by Aled Williams.
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19/09/2017Waun Sidan137, 148SO 250 726407.7376.331.429Reclassified from 400m Sub-Pedwar to Pedwar due to LIDAR analysis conducted by Aled Williams.
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24/06/2017Graig y Garreg Lwyd124SH 730 427473.8443.630.229.9Reinstated to Pedwar status due to Leica GS15 survey conducted by John Barnard and Graham Jackson.
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11/06/2017Fuches135, 136SN 866 836446.7419.227.5c 76Reclassified from Pedwar to 400m Sub-Pedwar due to LIDAR analysis conducted by Aled Williams.
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07/06/2017Comins125SJ 174 282376.1341.434.7c 31Confirmation via Trimble GeoXH 6000 survey of reclassification from Sub List due to contour interpolation.
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*06/06/2017
Bryn Crugog136SN 941 923446.739452.7c 20Reclassified from 400m Sub-Pedwar to Pedwar due to LIDAR analysis conducted by Aled Williams.
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**05/06/2017
Esgair Hir136SN 937 925446.5423.722.8c 51Reclassified from Pedwar to 400m Sub-Pedwar due to LIDAR analysis conducted by Aled Williams.
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*24/05/2017
Allt y Genlli136SN 985 950398.9325.773.227Reclassified from 390m Double Sub-Pedwar to 390m Sub-Pedwar and Sub-Trichant to Trichant due to LIDAR analysis conducted by Aled Williams.
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**14/05/2017
Fainc Fawr135SN 741 893466.2437.928.332Reclassified from Pedwar to 400m Sub-Pedwar due to LIDAR analysis conducted by Aled Williams.
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**12/05/2017
Fynach Fawr135SN 727 890461.4432.528.9c 32Reclassified from Pedwar to 400m Sub-Pedwar due to LIDAR analysis conducted by Aled Williams.
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**06/05/2017
Moelfryn115SH 569 511275246.129c 30Reclassified from 200m Twmpau to 200m Sub-Twmpau due to LIDAR analysis conducted by Aled Williams (for bwlch) and detail from the Ordnance Survey Six-Inch map (for summit).
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*05/05/2017
Penmaen Mawr115SH 702 756385.8354.531.329.8Reclassified from Sub-Trichant to Trichant due to LIDAR analysis conducted by Aled Williams.
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**25/04/2017
Reilth Top137SO 284 881404.6375.329.3c 30Reclassified from Four to 400m Sub-Four based on a Trimble GeoXH 6000 survey, and subsequent LIDAR analysis conducted by Aled Williams, with the latter used for the height of the col.
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**13/04/2017
Fan y Big160SO 036 206716.3688.128.230Reclassified from 700m Twmpau to 700m Sub-Twmpau due to LIDAR analysis conducted by Aled Williams.
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**09/04/2017
Garreg Ddu115SH 701 462348319.628.4c 30Reclassified from Trichant to Sub-Trichant due to LIDAR analysis conducted by Aled Williams.
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**29/03/2017
Mynydd y Drum160SN 807 097296.2271.424.8c 53Reclassified from 200m Twmpau to 200m Sub-Twmpau due to LIDAR analysis conducted by Kevin McGovern and Aled Williams, and subsequently confirmed via a Trimble GeoXH 6000 survey.
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*28/03/2017
MRF Tip160SN 828 114311.8277.634.2N/AAddition to the Y Trichant ranks due to LIDAR analysis conducted by Kevin McGovern and Aled Williams.
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*27/03/2017
Teisen Priodas160SN 820 108337.9244.693.3N/AAddition to the Y Trichant ranks due to LIDAR analysis conducted by Kevin McGovern and Aled Williams, and subsequently confirmed via a Trimble GeoXH 6000 survey.
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*24/03/2017
Cwmcynydd Bank136, 147SO 053 724451.4416.435c 27Reclassified from 400m Sub-Pedwar to Pedwar due to LIDAR analysis conducted by Aled Williams.
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**17/03/2017
Carreg y Gwynt136, 147SN 956 776426.7398.628.132Reclassified from Pedwar to 400m Sub-Pedwar due to LIDAR analysis conducted by Aled Williams.
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**11/03/2017
Esgair Wen
135, 136, 147
SN 807 664494.6464.729.931Reclassified from Pedwar to 400m Sub-Pedwar due to LIDAR analysis conducted by Aled Williams.
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**19/01/2017
Mynydd Llangatwg161SO 202 145528.4499.628.8c 31Reclassified from 500m Twmpau to 500m Sub-Twmpau due to LIDAR analysis conducted by Aled Williams.
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* 30/12/2016
Lan160SO 052 391413.637736.6c 29Reclassified from 400m Sub-Pedwar to Pedwar due to LIDAR analysis conducted by Aled Williams.
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** 20/12/2016
Twyn Disgwylfa170SS 995 959428.1399.328.830Reclassified from Pedwar to 400m Sub-Pedwar due to LIDAR analysis conducted by Aled Williams.
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* 18/12/2016
Pt. 415.6m171SO 243 011415.6384.231.4c 28Reclassified from 400m Sub-Pedwar to Pedwar due to LIDAR analysis conducted by Aled Williams.
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* 16/12/2016
Y Ceiliog Mawr115SH 594 598220.3182.837.5N/AIncluded due to LIDAR analysis conducted by Aled Williams.
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* 03/11/2016 & 10/04/18Coed y Garth124SH 660 16583.456.227.1c 28Reclassified to P30 due to 87m summit spot height on the Harvey 1:25,000 Superwalker map and 56m bwlch spot height on the Ordnance Survey enlarged Geograph map, with subsequent LIDAR analysis initially conducted by Chris Crocker and George Gradwell and later by Myrddyn Phillips reclassifying the hill back to Sub-Twmpau status.
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15/05/2016Foel Fawr157SM 705 2257241.930.1c 29Reclassified from 30-99m Sub-Twmpau to 30-99m Twmpau due to Trimble GeoXH 6000 survey.
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** 14/05/2016
Ynys Fach157SM 822 32730.81.229.6c 30Reclassified from 30-99m Twmpau to 30-99m Sub-Twmpau due to a Trimble GeoXH 6000 survey.
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04/05/2016Moel y Gôd125SJ 072 168307.6270.637c 35Promoted from Sub-List and confirmed via Trimble GeoXH 6000 survey.
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** 08/04/2016
Pt. 407.7m136, 148SO 180 692407.7379.528.330Reclassified from Pedwar to 400m Sub-Pedwar due to a Trimble GeoXH 6000 survey.
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* 05/04/2016
Pandy Bank117SJ 336 538105.4mc 71c 34N/AIncluded in 100m Tumpau list due to a Trimble GeoXH 6000 survey which confirms details on the OS enlarged Geograph map, previously unclassified
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** 14/03/2016
Craig y Garreg Lwyd124SH 730 427473.4443.529.935Reclassified from Pedwar to 400m Sub-Pedwar due to a Trimble GeoXH 6000 survey. Subsequently reinstated as a Pedwar (see survey dated 24.06.17).
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** 12/03/2016
Drysgol136, 147SN 946 744483.6454.429.2c 31Reclassified from Pedwar to 400m Sub-Pedwar due to a Trimble GeoXH 6000 survey.
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* 23/02/2016
Pentre Clawdd Gorse
117SJ 311 442142111.730.329.5Included in 100m Tumpau list due a Trimble GeoXH 6000 survey, summit previously listed as Wynnstay Park (SJ 309 429)
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23/02/2016Gallt y Celyn116SH 811 542257.6227.530.1c 29.6Re-instated as 200m Twmpau after bwlch survey
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** 23/02/2016
Moel y Gadair124SH 521 39166.738.128.5c 30Reclassified from 30-99m Twmpau to 30-99m Sub-Twmpau
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11/02/2016 & 11/04/2018Pt. 70.3m123SH 309 29770.340.729.6c 25Reclassified to P30 due to 41m bwlch spot height on the Ordnance Survey enlarged Geograph map and contour interpolation for summit height, with subsequent LIDAR analysis initially conducted by Chris Crocker and George Gradwell and later by Myrddyn Phillips reclassifying the hill back to Sub-Twmpau status.
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11/02/2016Pt. 66m123SH 299 270663234c 31Promoted from Sub-List with positional change for summit
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11/02/2016Pt. 68m123SH 304 399683731c 30Promoted from Sub-List
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** 20/01/2016
Bwlch Clump125SJ 170 108263.9234.929.1c 30Previously listed as a twin P30 with Pt. 262.8m positioned at SJ 173 109, based on each having a 262m summit spot height. Pt. 262.8m was surveyed as being 262.8m high with 19.4m drop.
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17/12/2015Bodlondeb Wood115SH 779 781c 57c 23c 34N/ANot included in original P30 list
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03/12/2015Pt. 99m114SH 385 89499c 68c 31N/ANot included in original P30 list
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* 13/10/2015
Bersham Bank117SJ 311 481153.6c 103c 51N/AIncluded in 100m Tumpau list due to survey with Trimble GeoXH 6000, previously unclassified
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07/09/2015Banc Bronderwgoed135, 136SN 871 987404.2376.427.730Reclassified from Pedwar to 400m Sub-Pedwar due to a Trimble GeoXH 6000 survey.
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** 12/08/2015
Bryn Serth161SO 147 109403.9378.625.4c 34Reclassified from Pedwar to 400m Sub-Pedwar due to a Trimble GeoXH 6000 survey.
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15/06/2015Castell Cricieth123SH 500 37749.619.330.3N/AP30 status discovered by Alex Cameron, confirmation by Trimble GeoXH 6000 survey.
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15/06/2015Carreg yr Eryr124SH 526 37853.322.430.9c 30Originally in Hills to Survey Sub-List, later promoted to P30 list when drop values added, promotion confirmed by Trimble GeoXH 6000 survey
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** 21/05/2015
Wenallt147SN 933 571466.4438.128.330Reclassified from Pedwar to 400m Sub-Pedwar due to a Trimble GeoXH 6000 survey.
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** 16/05/2015
Pt. 422.3m136SO 073 822422.3393.22931Reclassified from Pedwar to 400m Sub-Pedwar due to a Trimble GeoXH 6000 survey.
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24/12/2014Mynydd Poeth116SH 953 513419.3387.631.7c 29Reclassified from 400m Sub-Pedwar to Pedwar due to a Trimble GeoXH 6000 survey.
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17/11/2014Pt. 245m160SN 721 0592452143131Promoted from Sub-List due to 214m bwlch spot height on the OS enlarged Geograph map
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10/11/2014Pt. 232m162SO 518 106232c 202c 30c 30Promoted from Sub-List
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10/11/2014Pt. 277m171ST 485 990277c 247c 30c 30Promoted from Sub-List
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05/11/2014The Cold Piece137SO 338 996399.534257.5c 58Reclassified from 400m Four to 390m Sub-Four due to a Trimble GeoXH 6000 survey
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03/11/2014Cefn Cantref160SO 048 26929326330c 30Promoted from Sub-List due to 263m bwlch spot height on the OS enlarged Geograph map
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20/10/2014Pt. 238m159SN 672 232238c 203c 35c 34Promoted from Sub-List
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20/10/2014Pen y Lan159SN 663 206268c 235c 33c 34Promoted from Sub-List
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06/10/2014Mynydd Cerrig159SN 500 136c 208c 177c 31c 30Promoted from Sub-List
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29/09/2014Pt. 204m158SN 171 12020417331c 30Promoted from Sub-List due to 204m summit spot height on the OS enlarged Geograph map
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* 21/09/2014
Pt. 499.5m124SH 665 310499.5469.230.3c 27Reclassified from 400m Sub-Pedwar to Pedwar due to a Trimble GeoXH 6000 survey.
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15/09/2014Blaen Wern Wood146SN 564 484c 226c 194c 32c 28Summit relocation and promoted from Sub-List due to 5m contour intervals on the OS enlarged Geograph map
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01/09/2014Pt. 208m146, 160SN 735 366208c 175c 33c 33Promoted from Sub-List
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01/09/2014Allt Mes146, 160SN 795 397217c 184c 33c 33Promoted from Sub-List
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01/09/2014Pt. 245m147SN 917 501245c 212c 33c 33Promoted from Sub-List
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01/09/2014Comin y Garth147SN 982 54824821830c 32Promoted from Sub-List due to 218m bwlch spot height on the OS enlarged Geograph map
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01/09/2014Pt. 282m147, 160SN 802 42428225131c 29Promoted from Sub-List due to 282m summit and 251m bwlch spot height on the OS enlarged Geograph map
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01/09/2014Pt. c 285m147SN 972 529c 285252c 33c 27Promoted from Sub-List due to 252m bwlch spot height on the OS enlarged Geograph map
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01/09/2014Pen Llys147SN 998 58429226230c 30Promoted from Sub-List due to 262m bwlch spot height on the OS enlarged Geograph map
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01/09/2014Comins Pen-y-banc135SN 675 691299c 207c 28c 92Summit positional change resulting in dramatic increase in drop value as a 200m Sub-Twmpau is reclassified to a 200m Twmpau
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25/08/2014Pt. 243m161SO 126 32024321330c 29Promoted from Sub-List due to 213m bwlch spot height on the OS enlarged Geograph map
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24/08/2014Castell Dinbych116SJ 051 657143.2110.233c 30Confirmation of P30 status from Trimble GeoXH 6000 survey
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18/08/2014Yatt Wood148SO 246 584c 255c 243c 12c 34Deleted from the Welsh 200m P30 list as c 277m summit has been quarried away
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* 26/07/2014
Pt. 238m146, 160SN 795 343238c 208c 30c 30Promoted from Sub-List
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21/07/2014Mynydd Cae-du135SN 728 98522719433c 28Promoted from Sub-List due to 227m summit and 194m bwlch spot height on the OS enlarged Geograph map
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21/07/2014Pt. 237m135, 136SN 809 977237c 203c 34c 33Promoted from Sub-List due to 237m summit spot height on the OS enlarged Geograph map
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21/07/2014Pt. 252m135SN 797 954252c 221c 31c 30Promoted from Sub-List
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07/07/2014Gribin124
SH 675559 16814
209.3169.739.6c 39This hill is an automatic entry to the 200m Twmpau list and was mistakenly included in the Sub-List when first published, it's reclassification has now been confirmed by LIDAR analysis conducted by Myrddyn Phillips.
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07/07/2014Craig y Merwydd124
SH 64413 13459
295.526134.5c 32Confirmation of 200m Sub-Twmpau reclassified to 200m Twmpau from LIDAR analysis conducted by Myrddyn Phillips
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07/07/2014Craig y Castell124
SH 69405 17302
297.1263.533.6c 33Reclassified from 200 Sub-Twmpau to 200m Twmpau status due to 298m summit and 264m bwlch spot height on the OS Interactive Coverage Map hosted on the Geograph map, and reclassification confirmed via LIDAR analysis conducted by Myrddyn Phillips.
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* 06/07/2014
Pt. 227m159SN 547 12122719730c 29Promoted from Sub-List due to 227m summit spot height on the OS enlarged Geograph map
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30/06/2014Mynydd Llwyn-gwern135SH 766 04527624234c 34Promoted from Sub-List due to 276m summit spot height on Harvey Maps and 242m bwlch spot height on the OS enlarged Geograph map
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23/06/2014Pt. 238m136SO 111 962 / SO 103 962238c 208c 30c 23Twin Top promotion from Sub-List due to two 238m summit spot heights on the OS enlarged Geograph map
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23/06/2014Pt. 249m136SO 137 9502492133628Promoted from Sub-List due to 249m summit spot height on the OS enlarged Geograph map
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* 23/06/2014
Boncyn y Beddau136SO 107 98125322231c 27Promoted from Sub-List
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