Mapping Mountains – Summit Relocations – Tumps

Tumps – Summit Relocations

The Tumps (thirty & upward metre prominences) are all hills in Britain that have a minimum drop of 30m, irrespective of their height.  The list was collated by Mark Jackson and was reliant upon the duplication of many other lists that already existed such as the accumulated listings of the Simms, Deweys, Donald Deweys, Highland Fives, Y Pedwarau, The Fours and Y Trichant, and the posts that have appeared on Mapping Mountains detailing the summit relocations specifically for this list appear below presented chronologically in receding order.

Mapping Mountains - Summit Relocations - Tumps

Elbury Hill (SO 869 558) – recommended summit relocation from Leopard Hill (SO 872 555) - 2nd summit relocation

Survey post for Elbury Hill and Leopard Hill

There has been a recommendation of a Summit Relocation to a hill listed in the Tumps which was initiated by a survey with the Trimble GeoXH 6000 and which took place on the 29^th January 2018 in good dry conditions, with no breeze and clear visibility.

The criterion for the list that this recommendation affects is:

Tumps – All British hills with 30m or more of drop.

The list was duplicated, compiled and collated by Mark Jackson and first published in 2009, with the word Tump being an acronym meaning Thirty & Upward Metre Prominences.

The name of the hill is Elbury Hill and it is placed in Central and Eastern England Region 39, with its Parent Hill being Walton Hill (SO 942 798).  The hill is positioned overlooking the city of Worcester and has the B 4637 road to its south-east which is named Tolladine Road in its upper section.

As the summit of the hill is not a part of designated open access land permission to visit should be sought, however the summit area of this hill and that of Leopard Hill are used for recreation purposes, with Elbury Hill having a number of benches positioned around the periphery of its summit for people to sit and admire the view.

The qualifying Tump is currently Leopard Hill (SO 872 555) which is given a 98m summit spot height on contemporary Ordnance Survey maps.  To the north-west of Leopard Hill are further areas of land that have in the main escaped urban development, these are Elbury Hill and Gorse Hill.  Elbury Hill is given a 98m summit spot height on the Ordnance Survey Interactive Coverage Map hosted on the Geograph website, whilst Gorse Hill is given a 92m summit spot height on this same map.

The summit area of Leopard Hill is crowned by a metal fenced water tower, whilst the summit area of Elbury Hill has two large metal fenced compounds housing covered reservoirs, with land between being open.

The summit of Leopard Hill

The summit of Elbury Hill

The summit of Elbury Hill is shown with a triangular symbol on the Ordnance Survey Six-Inch map published in 1886, which is given the height of 323ft (98.5m) on the Six-Inch map published in 1905.  The latter map has a covered reservoir marked to the north of the triangular symbol, whilst the map from 1886 just has the symbol; this implies that the 323ft (98.5m) height was taken to natural ground before the covered reservoir was constructed.  The TrigpointingUK website details a block that replaced a pillar in 1970 and which is adjacent to a mast that stands in one of two covered reservoir compounds, this mast is also recorded in the OS Trig Database at SO 86872 55812, unfortunately a height is not recorded for it.  The 323ft (98.5m) height would have been to the old pillar which is given the position of SO 86915 55816 in TrigpointingUK.

Extract from the Ordnance Survey Six-Map map published in 1886

Extract from the Ordnance Survey Six-Inch map published in 1905

The survey with the Trimble GeoXH 6000 produced the following results:

Leopard Hill:  97.197m (converted to OSGM15) summit at SO 87270 55534

Elbury Hill:  97.435m (converted to OSGM15) summit at SO 86900 55854

Although the recommendation is to swap the position of the col and therefore the drop value and status as Tump of these two hills, the height difference produced by surveying with the Trimble GeoXH 6000 is not great.  However, the resulting data is the best available at hand, with the caveat that higher ground may exist close to where the Trimble was placed on Leopard Hill and that higher ground may exist in the southern compound close to, or at the position of the high mast on top of Elbury Hill.  The added complication are the covered reservoirs on Elbury Hill and whether the open ground between the two compounds can be thought of as being natural.

The full details for the hill are:

Parent Hill:  Walton Hill

Summit Height:  97.4m (converted to OSGM15)

Name:  Elbury Hill

OS 1:50,000 map:  150

Summit Grid Reference (recommended New Position):  SO 86900 55854 

Drop:  c 53m

For details on the survey of Leopard Hill and Elbury Hill

Myrddyn Phillips (March 2018)

Mapping Mountains - Summit Relocations - Tumps

Caus Castle (SJ 337 077) - 1st summit relocation

Survey post for Caus Castle

Significant Height Revisions post for Caus Castle

There has been confirmation of a Summit Relocation to a hill that is listed in the Tumps (thirty & upward metre prominences), with the summit height, col height and their locations, the drop and status of the hill derived from a Trimble GeoXH 6000 survey and subsequent LIDAR analysis conducted by Myrddyn Phillips.

Caus Castle (SJ 337 077)

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

Tumps.  All hills in Britain that have 30m minimum drop, irrespective of their height.  The list is authored by Mark Jackson and is published and maintained by the DoBIH.

The summit cone of Caus Castle (SO 337 077)

The name the hill is listed by is CausCastle, and it is adjoined to the Stiperstones group of hills, which are situated in the county of Shropshire close to the Welsh border, and it is positioned with a minor road to its immediate north-west, the A458 road to its north and the B4386 road to its east, and has the village of Westbury towards the north-east.

Prior to the survey with the Trimble GeoXH 6000 this hill was listed with a 223m summit height based on the spot height that appears on the contemporary Ordnance Survey 1:25,000 Explorer map and which is positioned at SJ 33772 07836.

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

However, it was not until the Trimble GeoXH 6000 survey and subsequent LIDAR analysis that the details for this hill could be accurately assessed.  The LIDAR (Light Detection & Ranging) technique produced highly accurate height data that is now freely available for much of England and Wales.

LIDAR summit image of Caus Castle (SJ 337 077)

LIDAR analysis gives the highest ground on this hill as 232.1m with the Trimble giving the summit positioned at SJ 33713 07792, and this position in relation to the position of the 223m spot height comes within the parameters of the Summit Relocations used within this page heading, these parameters are:

The term Summit Relocations applies to when the high point is positioned in a different field, to a different feature such as a conifer plantation, within a different map contour, a different point where a number of potential summit positions are within close proximity, when natural ground or the natural and intact summit is confirmed compared to a higher point such as a raised field boundary or covered reservoir that is considered a relatively recent man-made construct, or a relocation of approximately 100 metres or more in distance from either the position of a map spot height or from where the summit of the hill was previously thought to exist.

The summit where the 223m Ordnance Survey spot height appears

The Trimble GeoXH 6000 on the summit of Caus Castle

Therefore, the summit height produced by LIDAR analysis is 232.1m with the Trimble GeoXH 6000 giving the summit positioned at SJ 33713 07792.  This position is not given a spot height on the contemporary Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and is positioned to a different feature and is approximately 70 metres south-westward from where the 223m spot height appears.

The full details for the hill are:

Group:  Stiperstones

Name:  Caus Castle

OS 1:50,000 map:  126

Summit Height:  232.1m (LIDAR)

Summit Grid Reference (New Position):  SJ 33713 07792 (Trimble GeoXH 6000)

Col Height:  180.4m (converted to OSGM15, Trimble GeoXH 6000)

Col Grid Reference:  SJ 33384 07622 (Trimble GeoXH 6000)

Drop:  51.7m (LIDAR summit and Trimble GeoXH 6000 col)

Myrddyn Phillips (April 2015)