Mapping Mountains – Hill Reclassifications – Humps

Middle Knoll (SD 654 543) – Hump reclassified to Subhump

This is the sixteenth in a series of Hill Reclassification posts that detail hills whose status has been altered in the listing of the Humps (HUndred Metre Prominences) through map study and / or surveys that I have instigated.

This and forthcoming posts are retrospective as many of these hill reclassifications were initiated from studying the Ordnance Survey enlarged mapping that is hosted on the Geograph website, or in this instance the Harvey 1:25,000 Forest of Bowland map, and for the reclassifications that affected the Humps the email I posted on the RHB Yahoo Group forum in relation to this hill was dated 20.08.13.

The listing of Humps was published in book format by Lulu in 2009 and entitled More Relative Hills of Britain, its author; Mark Jackson gives credit to a number of people who contributed toward the formation of this list, these include; Eric Yeaman, Alan Dawson, Clem Clements, Rob Woodall, Bernie Hughes, Pete Ridges and others.  When the list was published in book format there were 2987 Humps listed with their criteria being any British hill that has 100m or more of drop, accompanying the main list is a sub category entitled Subhumps, with the criteria being any British hill that has 90m or more and below 100m of drop.

More Relative Hills of Britain by Mark Jackson

The details for the reclassification appear below:

There has been a reclassification to the listing of the Humps (HUndred Metre Prominences) due to consulting the Harvey 1:25,000 Forest of Bowland map, with these details being posted on the RHB Yahoo Group forum on 20.08.13.

Prior to this notification Mark Jackson had listed this hill with c 100m of drop based on the 395m summit spot height that appears on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map and an estimated col height of c 295m based on col contouring at 10m intervals.  However, the Harvey map gives this hill the same 395m summit spot height, but also includes a 296m col spot height, with these values giving this hill 99m of drop, which is insufficient for it to retain its Hump status. 

Extract from the Harvey 1:25,000 Forest of Bowland map showing the 395m summit and 296m col spot heights

The hill is adjoined to the Ward’s Stone group of hills in the Forest of Bowland and is situated overlooking the Brennand River to its west and the Whitendale River to its east, with the small community of Dunsop Bridge towards the hill’s south.

The reclassification of this hill from Hump to Subhump status was accepted by Mark Jackson and its new classification augmented in to the listing of the Humps on the 23.08.13.

The full details for the hill are:

Name:  Middle Knoll

Summit Height:  395m

OS 1:50,000 map:  102, 103

OS 1:25,000 map:  41

Summit Grid Reference:  SD 65410 54323

Drop:  99m

Myrddyn Phillips (October 2017)