mogga wrote:

Possibly the worst photo ever
http://www.flickr.com/photos/25345470@N02/5323999750/

but shows a concrete structure with a square drain cover in the top
but doesn't show on any mains drainage plans for nearby houses or for
a utility search for the land.

One of the men who uncovered it said it reminded him in size and shape
of a drain cover.
Too cold and horrid to go and take more photos today - but will get a
proper look soon.

Any ideas?

Is it just the end of the drains system that goes the nearby houses?
No houses have ever been on the land from what we can see on old maps.

What's the other side of the fence? It looks a bit industrial.

Edgar