At the start of this year, my family visited Terezin Ghetto and camp - the middle daughter was writing a school report about children in WWII. There were many dreadful and surprising pieces of information that we had not met in books. But all of them were explainable and understandable, at least in that horror context. All except one.
Listening to the statistics of trains from Terezin ghetto to various concentration camps (not reading, it was a movie), it was easy to notice, that even going to Auschwitz was not the worst variant. 2-3% of people from every train to Osvetim remained to live. (Due to the fast overtaking of Auschwitz by the Russian army). There was not a single train to the known destination, all passengers of which died.
But among other trains with known destinations, there were trains to unnamed and unnumbered camps. Firstly, it is strange by itself, why Germans with their Ordnung hadn't registered the target of several (4-6, I don't remember the exact number) trains? Secondly, all the people sent to all these anonymous camps got lost. Not a single one remained. Obviously, these two points are not connected accidentally. Nazis were hiding something. Maybe, it was only one anonymous camp...
Notice, it is not about the "death trains", used to kill people at the end of the war, in 1945. It is another time, the peak of the war (42-44), tens of trains were filled and sent to named camps. And as for the death trains, they had passengers that were saved. The mortality was not 100%.
So, what were these trains to anonymous camps with 100% mortality?