J1046 : Listullyard Fort Triangulation Pillar

taken 2 months ago, near to Newtown, Banbridge and Gilford, Northern Ireland

Listullyard Fort Triangulation Pillar
Listullyard Fort Triangulation Pillar
OSNI trig pillar at Listullyard Fort, an ancient rath a few miles outside Banbridge - see J1046 : Listullyard fort near Banbridge. The pillar sits nicely in the middle of the trees - although the foliage obscures some views the rath is in a commanding position and the hills around Belfast, Slieve Croob, the Mournes, Slieve Gullion and many other hilltops are all visible.
The pillar is in good condition but has been splattered with thick blue paint in places. The flush bracket has been levelled to 156.08 metres above MSL J1046 : Flush Bracket, Listullyard Fort Triangulation Pillar.
OSNI Triangulation Stations
The re-triangulation of Northern Ireland by the Ordnance Survey Northern Ireland began in 1950. This was the first complete survey of Northern Ireland which included observations with the new primary triangulation of the country, its connection with the Republic of Ireland and the cross-channel connection between Ireland and Great Britain. This began by OSNI establishing a series of triangulation stations throughout the country. Almost all of these stations were topped by trig pillars and 80, mainly primary and secondary pillars, had been constructed by October 1949. Measurements between primary stations began in 1950 and measurements for these and the secondary stations were completed by July 1956. The construction and measurements for tertiary stations were completed later (probably no later than the mid 1960s). Only two stations are not topped by pillars - Lighthouse Island, marked by a brass rivet, and Ardglass, which utilised the top of a high stone folly. The older triangulation stations on the Lough Foyle Base Line were also re-surveyed as part of this process. A majority of the stations are still extant today but a few have been removed or destroyed.
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J1046, 17 images   (more nearby )
  (find more nearby)
Date Taken
Friday, 3 May, 2019   (more nearby)
Saturday, 4 May, 2019
Geographical Context
Historic sites and artefacts  Uplands  Woodland, Forest 
Place (from Tags)
Triangulation Station 
Primary Subject of Photo
Trig Point 
Subject Location
Irish: geotagged! J 1013 4685 [10m precision]
WGS84: 54:21.5063N 6:18.4026W
Camera Location
Irish: geotagged! J 1013 4686
View Direction
South-southwest (about 202 degrees)
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Image Type (about): geograph  (Third Visitor for J1046) · First in 5 Years (TPoint) (about)
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