Roadside water tank, Blackstone Edge Road
Introduction
The photograph on this page of Roadside water tank, Blackstone Edge Road by Humphrey Bolton 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: © Humphrey Bolton Taken: 23 Mar 2012
A stream runs into it ('Sinks' on the OS map), so perhaps its main purpose is to prevent or reduce spillage onto the road after heavy rain.