Sue I have seen uncle's pictures and it looks like he had a tent of some sort to stay in over the ice hole. I am not sure if they sleep in the tent or not, you probably know much more than I do . MIL had 13 sibs, several lived well over 100, this one was one- died on his WI farm at 102. Jim has been told that he will make it over l00 easily by the genetic records he has. I have warned the girls-LOL, I doubt I will make 90.