2022
SD3582 : Triangulation Pillar, Bigland Tarn
taken 3 years ago, near to Low Wood, Cumbria, England

Triangulation Pillar, Bigland Tarn
The Ordnance Survey triangulation pillar on the summit of Grassgarth Heights, with Bigland Tarn and the Coniston Fells in the background.
The pillar was constructed in 1949. The flush bracket benchmark number S5590 on the north east face of the pillar marks a height of 205.236m above sea level (Ordnance Datum Newlyn) last levelled for height in 1972 (photograph SD3582 : Flush Bracket Benchmark, Bigland Tarn).
The pillar was constructed in 1949. The flush bracket benchmark number S5590 on the north east face of the pillar marks a height of 205.236m above sea level (Ordnance Datum Newlyn) last levelled for height in 1972 (photograph SD3582 : Flush Bracket Benchmark, Bigland Tarn).
Ordnance Survey Trig Point
A triangulation station, also known as a triangulation pillar, trigonometrical station, trigonometrical point, trig station, trig beacon or trig point. Erected by the Ordnance Survey.
See Linkfor more details about Trig Stations.