Nessie, you argue from ignorance, I don't argue from incredulity.
Basically everyone (exterminationists and revisionists) agree, those holes you pointed out aren't the mythical zyklon insertion holes.
Pro tip, when casting concrete, you have the opportunity to lay something called a form to create a regular hole. You know, like the holes in the floor of the furnace room.
That is what a German hole in concrete would look like. Precise, free of obstruction and like it was done on purpose.
So far as the manipulation of the aerial reconnaissance photographs, those 1.4 meter (roughly) stacks on the roof of corpse cellar 1 aren't the only things on the roof.
The folks that touched up the reconnaissance photographs went ahead and placed blocks of people on some of the barracks roofs...
Either that, or the Germans got the detainees to form up on the roof and the ground in blocks...
Food for thought, if the zyklon insertion holes were 1.4 meters tall, would the ss man need to clamber up a ladder to pour the pellets in? And what is the point? Like, how do you take the cover on and off?
Surely you can admit that these comical insertion chimneys are only good for looking at on a photo.
I apologize for the thread diversion, but I literally spit out my coffee laughing.