Apparently at the rail halt for Treblinka, there was a fake ticket office and so on , so it looked like a normal place.
Yep, lessons learned from the laboratory camp in Belzec, where the number of known survivors was two. Not two percent of the 500,000 to 600,000 people who arrived there. Two people from the 500,000 to 600,000 who arrived there. The vast majority died the same day they got there.
By contrast the survival rate at Auschwitz was between 13% and 18% (depending on which numbers you use) and the life expectancy was about double that of a British Subaltern at the front in WWI.