A drone flying over the Nazi concentration camp Auschwitz: the images will make you shudder...

Nazi concentration camps are undeniable evidence of a moment in human history when pure evil and irrationality reigned. A time which led to the killing, in the terrifying ways that we all now know, of more than a million Jews and other minorities.

Many people know the name of Auschwitz, some have visited in person, but few know or have seen this infamous place from this particular perspective: that of a drone, which the BBC used to fly over the camp to take pictures and to make a chilling video clip as a silent testimony to the horror of Auschwitz.