Unemployed watchman

Suddenly I saw a fence post, pretty rotten and without any wires. I was puzzled. What should a fence post be for here?! Woods, a path, fields - and a fence post! What a nonsense!

I decided to walk on.

Then I saw a second fence post. And a third one, and so on.

 

I was walking along the former 5km-restricted area along the former German-German border ...

Done