Star Man , You say it much better than I could , on the whole, yes. It never occurred to me though "The lack of oxygen "as you state is brilliant and even adds to the foundation of this theory. For some years now I have always said a snow wall cave-in but could never get any farther until I read one of your firsts correspondence to me. It was the word "Nada" in one of your reply's that the words, "They would of if they could of" quoting myself, They were sandwiched out of the tent by either one or two cave-in, which would in reality, in normal winter weather would be shocking at first but funny around a campfire later. One of the reasons I ruled out murder not because the lack of footprints, but because no one knew exactly where they were, Plus, there were much better places to get rid of these pesky kids if I was following them to kill them. We know that no Nation would never launch in inclement weather for testing a rocket for obvious reasons, money being the first and second the data would be scattered and uncontrolled. We also know that one cannot photo anything in the sky in a snow storm which from their photos was taking place. Lastly, I've always maintained that if we can find a logical answer why they left the tent everything else will fall into place. In the documentary "The Proof" Princeton professor Andrew Wiles as a 10 year boy read Fermat's last theorem in a math book that no one for over three hundred years could never find a proof to (a square + b square= Z square) when substituting any whole number, one could never find a proof to this ,but ,Fermat said that he had found one and wrote it just in the margin of his book which was lost. Everyone loves a challenge and Dyatlov is just one of those challenges. Professor Wiles did eventually find a proof, but it is a 20th century proof and Fermat could never of had this proof. This documentary I believe can be found on youtube....The Proof. BestTtim