HOBO STOVE :
Punch some holes around the bottom and in the bottom of a drum.
Then cut out a panel on one side about 3 inches from the bottom.
Place the drum on a ring of stones for ventilation and stoke the fire through the panel.
TRENCH FIRE :
Dig a trench about one foot wide, two feet long, and about two feet deep.
Fill the bottom of the trench with a layer of rocks.
Build your fire on the rocks.
Placing a spit across the embers is very ideal for a roast.
Wilderness Survival