Yes, but why would he leave Zina if they were going uphill either?
I guess these things need to be folded into one's favorite theory and considered from that perspective. For example, 1) a bad man was forcing them away from the tent, and Zina and Rustem both began to fight and were whacked, falling and dying. In that case, Zina should have an ice bed also, but no one seems to have noted that. Or 2) since I think you prefer the avalanche theory, the avalanche overtook them both as they were fleeing down the slope and they both were overcome and fell.
I remember reading a few times -- different searchers -- that Zina had a broken head.
There's a question amoungst many
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If they were getting attacked going downhill , enough that the realisation by the group that one of them is being left for dead or is/has been beaten up, the fight to death starts there. Guns or no guns , overwhelming numbers or not. It's fight to death there and then. ( In my mind anyway) and it isn't a slap around the face fight, it's no rules fighting, which includes head butting , bitting, gouging eyes , it's game on.
If they were going up hill it still raises the question of why leave Igor . To me this implies that reaching the tent is the most important thing. If there's been the snow collapse at the Ravine, the 2 Yuri's are trying to warm up , cold is now their enemy. To sit by or carry Igor up the slope is also death . Reaching the tent and what can be collected from it for survival is the last option?
the observer that noted the ice, was only at Rustem's body I believe and not the others. Again, people were not investigating with suspicion at that time.
I favour the Wolverine theory, closely followed by a small snow slip / bad weather(giving the impression of an avalanche or potential for one).
I do not think they were swept anywhere by an avalanche. I have to start from a base assumption, that there were no outsider's and it can all be explained from the environment. In parallel , I, like everyone else and even the searchers and friends at the time only have speculation as to what else might have happened,
I read that too, about the broken head, it's been discussed somewhere in our forum.if I remember correctly it was a generalisation , regarding the marks on her face. We can see for ourselves in the frozen pictures and thawed photos.