Bp 223, Mammuth Gerät Kijkduin:

V-143: Mammuthstand, Bunker for 'Mammoth' radar

photo's: author

 number 8656  the name: ERIKA close combat defence and pantry (?)   

photo: RV

the toilets, we even found the brush! in the 'Betriebsraum' the walls ones had a wooden finish. The place where items were installed were first marked with chalk.
the 'Maschinenraum' where 6 'generators' of 3 different types were installed. Items on the wall numbered before installing. wiedende entrance bricked up after the 'generators' were installed, gaslock
     
filterroom with two perfect texts

M-151: 

specialpage9_223_v143_16.jpg (47610 bytes)        
the name: URSULA        

R-656: 

       
8658, it's a R 656

Various Vf bunkers:

 
  toilets  sauna  canteen
inside a Vf AA-bunker