Fortunately I don’t have to imagine as the first thing that happened to me after being shipped to Fairbanks in 1967, forty years ago this month, I went to Arctic Survival School, camping out with the air temperature at -40° the entire week. There was no “high-tech” gear, there was wool and goose down. It was not fun, and we weren’t moving great distances. If it had been warmer, we could have used to the snow to built shelters and insulate them. It is 32° in a well built snow cave and single candle will take the air temperature up to 40.
The humidity is near 4% because of the cold, so you dehydrate as quickly as you would in the desert, except that the water leaves on your breath.
You learn to live in those conditions, or you don’t.
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