Tyn yr Allt (SH 418 653)
There has been a Significant Name Change to a hill
that is listed in The Welsh P15s,
with the summit height, bwlch height and their locations, the drop and status
of the hill derived from LIDAR analysis conducted by Myrddyn Phillips.
|
LIDAR image of Tyn yr Allt (SH 418 653) |
The criteria for the list that this name change applies to
are:
The Welsh
P15s – Welsh hills with 15m
minimum drop, irrespective of their height, with an accompanying sub list entitled the Welsh Sub-P15s,
with the criteria for this sub category being all Welsh hills with 14m or more
and below 15m of drop. The list is authored by Myrddyn Phillips, with the
Introduction to the list appearing on Mapping Mountains on the 10th
May 2019.
|
The Welsh P15s by Myrddyn Phillips |
The hill is adjoined to the Ynys Môn group of hills, which are situated in the north-western part of
North Wales (Region A, Sub-Region A1), and
it is positioned with the A4080 road to its north and a minor road to its
south, and has the village of Niwbwrch (Newborough) towards the north-east.
|
Extrcat from the Ordnance Survey 1:25,000 Explorer map |
When the listing that became known as The Welsh P15s was being compiled, this
hill was listed as Bryn Menai which upon greater investigation is in all
likelihood a name of a house, with an estimated c 16m of drop, based on an
estimated c 54m summit height and an estimated c 38m bwlch height, with each
height based on interpolation of 5m contouring that appear on the Ordnance
Survey 1:25,000 Explorer map.
|
Extract from the Tithe map |
As the summit of this hill comprises bounded land
the details for it were examined on the Tithe map. The
term Tithe map is generally given to a map of a Welsh or English parish or
township and which was prepared after the 1836 Tithe Commutation Act. This act allowed tithes to be paid in cash
rather than goods. The Tithe maps gave
names of owners and occupiers of land in each parish and importantly for
place-name research they also included the name of enclosed land. This enclosed land is usually based on a
field system, however not every field is given a name, but many are and
especially so in Wales.
|
Extract from the apportionments |
The enclosed land where the summit of this hill is
situated is given the number 85 on the Tithe map, this can be cross referenced
against the apportionments; it is these apportionments that give the name of
the owner or occupier of the land as well as the name of the land. The land where the summit of this hill is
situated is named as Tyn yr Allt in the apportionments, with the details on the Tithe map appearing in the parish of Newborough and in the
county named as Anglesey.
Therefore, the name this hill is now listed by in The Welsh P15s is Tyn yr Allt and this
was derived from the Tithe map.
The full details for the hill are:
Group: Ynys
Môn
Name: Tyn yr Allt
Previously Listed Name: Bryn Menai
OS 1:50,000 map: 114,
115
Summit Height: 53.6m (LIDAR)
Summit Grid
Reference: SH 41815 65370 (LIDAR)
Bwlch Height: 37.6m (LIDAR)
Bwlch Grid
Reference: SH 42469 66119 (LIDAR)
Drop: 16.0m (LIDAR)
Myrddyn Phillips (May
2021)
No comments:
Post a Comment