So it is a covert camera system.
On studying the now upright camo' log, the lens was obvious. Last time I visited it was slumped up against the tree, the lens hidden by the trunk. It must have fallen out of position and the operator has been back to rectify it. Not wanting to appear on CCTV I had to bend over backwards in a comical ballet position in order to take the somewhat blurry photo. Lets hope that there is only one hidden camera or else there is some great footage of me making a pleb out of myself!
It seems likely that this is a covert camera system left by the council in order to catch fly-tippers. I'm no fan of CCTV, and to find out that even in the countryside where I thought I was safe from prying eyes, I am still been spied upon, frankly pisses me off. People (if you can call them that) that dump crap in the countryside (or anywhere) piss me off even more, so I will tolerate this little intrusion.
From the looks of the case etc, I reckon this system is similar to the one below.
I don't suppose that these systems come cheap, and apparently the council have had a few of these stolen (Hint... hide it better, and/or lock it to a tree?) ... Not by me of course, what possible use or adventures would I find for one of these?!