53.31 F
New York
December 14, 2019
Home » Blog » The triangulation points that mapped Britain
BBC World

The triangulation points that mapped Britain

The triangulation points that mapped Britain
Spread the Love!!

In 1936, the Ordnance Survey began to construct concrete triangulation pillars, or trig points, to aid accurate measurement and map-making using the principles of trigonometry. By 1962, more than 6,000 had been built. And Stephen McCoy and Stephanie Wynne are trying to photograph the 310 primary pillars still standing.

Black Combe

Image caption

Black Combe, Cumbria, 600m (2,000ft)

Presentational grey line

Cadair Berwyn

Image caption

Cadair Berwyn, Powys, 827m

Presentational grey line

Cold Ashby

Image caption

Cold Ashby, Northamptonshire, 210m

The pillars were built in positions where at least two other points could be seen in order to form triangles for accurate measurement.

McCoy and Wynne’s work comprises large 360-degree panoramic photographs produced by placing the camera on top of the triangulation pillar, alongside a picture of the pillar itself.

Criffel

Image caption

Criffel, Dumfries and Galloway, 569m

Presentational grey line

Garnedd Ugain

Image caption

Garnedd Ugain, Gwynned, 1065m

Presentational grey line

Great Whernside

Image caption

Great Whernside, North Yorkshire, 704m

Presentational grey line

Martinsell Hill

Image caption

Martinsell Hill, Wiltshire, 289m

Presentational grey line

Rottington

Image caption

Rottington, Cumbria, 141m

Presentational grey line

Snaefell

Image caption

Snaefell, Isle of Man, 621m

Presentational grey line

Stiperstones

Image caption

The Stiperstones, Shropshire, 536m

Presentational grey line

Upton Beacon

Image caption

Upton Beacon, Derbyshire, 538m

Presentational grey line

Winter Hill

Image caption

Winter Hill, Lancashire, 456m

Presentational grey line

Wyck Beacon

Image caption

Wyck Beacon, Gloucestershire, 250m

Presentational grey line

Yr Eifl

Image caption

Yr Eifl, Gwynned, 564m

Presentational grey line

All photographs copyright Stephen McCoy and Stephanie Wynne.

https://www.bbc.co.uk/news/in-pictures-49760110

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Click whichever is suitable. Accept Read More