Amersfoort concentration camp (Dutch: Kamp Amersfoort, German: Durchgangslager Amersfoort) was a Nazi concentration camp in Amersfoort, Netherlands. The official name was "Polizeiliches Durchgangslager Amersfoort", P.D.A. or Amersfoort Police Transit Camp. 37,000 prisoners were held there between 1941 to 1945.