Essex and East Anglia 2015 - whitemaskmk2
Placed at regular intervals along the platforms of stations along the GEML are these rather sinister Black Boxes , presumably for pest control.
Station staff have instructions not to touch them.

Placed at regular intervals along the platforms of stations along the GEML are these rather sinister Black Boxes , presumably for pest control.
Station staff have instructions not to touch them.

Unknown