A beautiful little stream flowing through a South Devon wood. The perfect place to ... dump your old tractor tyres, fencing and radiators. 
And your concrete tank, plastic pipes and old motorbike.
As far as I can tell, the only access points to the field from which these things appear to have been dumped are through the farm buildings at one end, or via a padlocked gate at the other.
I like to go off-piste on my walks, exploring little-visited corners. I see this sort of thing a lot. Some people do not cherish our beautiful country.
