Forgotten camp

KL Warschau was a concentration camp established by the Germans in Warsaw during World War II. During communist Poland, this camp was not discussed in public. It was not even on the map of the Polish WWII martyrdom. Even after 1989, the camp did not return into the official Polish history. It is therefore not suprising that today, in Europe and in the world, nobody knows about KL Warschau. But what is particularly interesting, the existence of this camp has not been thus far properly commemorated. Why was that so?