2007
SK1136 : Trig and Tree
taken 17 years ago, near to Waldley, Derbyshire, England
Trig and Tree
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 Link for more details about Trig Stations.