How To Make A Campfire Last All Night
This technique, for use in the extreme cold, calls for two logs, each having 1″ of width per hour of burn time and 3′ of length per person. Example: To construct a fire that will burn for eight hours and warm two people, you will need two 6-foot logs that are each 8-inches thick. Get it?
Take a look at this interesting fire lay, as recommended by Far North Bushcraft and Survival. The fire lay doubles as a reflector wall! In Scandinavia, this type of fire is called “Rakovalkea” or “Nying”.