The article that started this thread was written before the news conference yesterday, so those questions were answered in that news conference.
I will see if I can find you a picture of the snow cave from the news conference yesterday. The cave starts low and shallow and then will angle up into a bigger sleeping area. The sheriff said that this cave was built as it should be, but maybe Mr. Kelly was found in that entrance area. Possibly wandering because of the hypothermia?
I had a 104 fever one time with pneumonia and had someone watch my kids away from the house. I started hallucinating and wandering around my house (funny how I can remember this) looking for a "door" so they could come home, but all of the "doors" were gone.