Concrete Curve
Introduction
The photograph on this page of Concrete Curve by Des Blenkinsopp as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © Des Blenkinsopp Taken: 17 Jul 2013
I don't know what this is. It looks sort of WW2 relic. A semi-circle of road around a central block that looks like a mounting for some piece of equipment. I'm guessing it was something fairly big that needed to rotate in a 180 degree arc, a light or radar beacon maybe. It's beside the London Loop path in Scratch Wood.
