"board_type"=>"history","information"=>"board"
"operator"=>"Staatsbosbeheer","board_type"=>"nature","information"=>"board"
"board_type"=>"history","information"=>"board"
"bicycle"=>"yes","information"=>"map"
"map_size"=>"site","map_type"=>"street","information"=>"map"
"bicycle"=>"yes","information"=>"map"
"bicycle"=>"yes","information"=>"map"
"board_type"=>"geology","information"=>"board"