In the news today - a young man spends two days in the bush with temperatures down to -30 C . Being not quite prepared he gets severe frostbite.
http://www.cbc.ca/canada/new-brunswick/story/2007/03/07/nb-salmonriver.html
http://www.cbc.ca/canada/new-brunswick/story/2007/03/07/nb-salmonriver.html